Nimh Game on AlmaLinux Revisit Tutorial
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Nimh Game on AlmaLinux Revisit Tutorial

Nimh Game on AlmaLinux Revisit Tutorial   🔍

Yes, some of the games, such as Nimh, on RJM Programming, written a long time ago, have suffered going from (a more forgiving) CentOS environment PHP (starting with a 5) going to an AlmaLinux environment PHP (starting with an 8).

So, similarly to the error tracking of AlmaLinux TimeZone Places Associative Array Tutorial earlier, there we were chasing down …

  • associative array (especially $_GET[] and $_POST[]) code …
  • non initialized PHP variables used later, along with not enough “global” usage within PHP functions used …
  • perhaps deprecated PHP functions

… by and large.

All controllable, for us, either by …

  • error_log scouring … eg. note how big these Apache error_log files can get here …

    … or, much more …
  • web browser Web Inspector debugging

… but with that second approach debugging the inhouse Nimh game, as first cab off the rank, we were thrown by scenarios that went …

  • we’ve isolated a URL (with arguments) for the Nimh game (and isolate it for issues) …
  • we type that into a web browser address bar …
  • we get a blank webpage … and so we open …
  • the web browser Web Inspector …
  • Console tab and see no errors … and then …
  • clicking for Elements tab we see empty “body” element with a non-empty “head” element

… and we were thrown at that stage, used to PHP errors manifesting themselves with that “body” element. We woke up after a few minutes, and opened up that “head” element, and down the bottom of that element (similarly to the “body” element debugging) there was the latest PHP error needing to be attended to. Yayyyyy!! Panic averted!

From there, lots to do, indeed, but the debugging has a controlled feeling about it, realizing this can happen. Eventually … Nimh (don’t be the last to take a match)!


Previous relevant AlmaLinux TimeZone Places Associative Array Tutorial is shown below.

AlmaLinux TimeZone Places Associative Array Tutorial

AlmaLinux TimeZone Places Associative Array Tutorial   🔍

Have you been waiting for more “heads up” regarding issues we’ll have moving from a PHP (of a version starting with a 5) to a PHP (of a version starting with an 8)? Join the crowd?! But so far, it hasn’t been that bad. That is, until we started into looking at the PHP TimeZone functionalities. Going back to a previous time of referencing this, at the recent Google Charts Geo Chart Region Picker Conditional Positioning Tutorial, associative array based codelines like …

<?php


$ourtz=new DateTimeZone($zzbit);

$ourtzgl=$ourtz->getLocation();

$versus=str_replace('"' . '' . '"];', '"' . $zzbit . '","' . '' . '"];', $versus);

$yourgl=explode(',',('' . implode(',',$ourtzgl)));

//$versus=str_replace('"' . ' ' . '"];', '"' . $ourtzgl[latitude] . '","' . ' ' . '"];', $versus);

//$versus=str_replace('"' . ' ' . '"];', '"' . $ourtzgl[longitude] . '","' . ' ' . '"];', $versus);

$versus=str_replace('"' . ' ' . '"];', '"' . $yourgl[1] . '","' . ' ' . '"];', $versus);

$versus=str_replace('"' . ' ' . '"];', '"' . $yourgl[2] . '","' . ' ' . '"];', $versus);


?>

… worked and meant codelines avoiding associative array logic, in favour of numerically indexed array thinking, like above (thanks to implode) were not needed then, on CentOS, but are needed now, in a redesign, on AlmaLinux, in thechanged TimeZone Places (the old way) (and TimeZone Places (the new way)) tz_places⚫php PHP code.

Previous relevant Google Charts Geo Chart Region Picker Conditional Positioning Tutorial is shown below.

Google Charts Geo Chart Region Picker Conditional Positioning Tutorial

Google Charts Geo Chart Region Picker Conditional Positioning Tutorial   🔍

Because of the work at Curl HTTP Request Methods Tool Tutorial we can now …

  • conditionally (depending on the existence of the Google Charts Image Charts API) …
  • determine the positioning of Region Picker functionality elements

… further to yesterday’s Google Charts Geo Chart Region Picker Alignment Tutorial.

We start with non-mobile improving the positioning for the “letter breadcrumbs” and “middle dropdown” elements …



var imagechartthere=true;



function checkimagechart(iois) {

var eaconto = (iois.contentWindow || iois.contentDocument);

if (eaconto != null) {

if (eaconto.document) { eaconto = eaconto.document; }



if (eaconto.body.innerHTML.replace('Not Found','Error 404').replace(/^\<br\>\<\/p\>/g, 'Error 404').indexOf('Error 404') != -1) {

imagechartthere=false;

document.getElementById('myh3').style.left='' + eval(eval('' + screen.width) * 7 / 10) + 'px';

document.getElementById('myh3').style.top='' + eval('' + document.getElementById('myh3').getBoundingClientRect().bottom) + 'px';

setTimeout(function(){

document.getElementById('tdleft').style.backgroundPosition="right center";

}, 60000);

}



}

}

//

// and then later ...

//

setTimeout(function(){

if (!imagechartthere && document.getElementById('myh3')) {

document.getElementById('more').style.left='' + eval(-170 + eval(('' + document.getElementById('myh3').style.left).replace('px',''))) + 'px';

} else {

document.getElementById('more').style.left='' + eval(eval(360 * lastiizoom / 2) + eval('' + document.getElementById('more').style.left.replace('px',''))) + 'px';

}

}, 3000);

… working via the “client pre-emptive iframe” feeling …



<iframe style="display:none;" src="/PHP/http_methods.php?url=https%3A%2F%2Fchart.googleapis.com%2Fchart" onload="checkimagechart(this);"></iframe>

… along with making the opacity toggling of the country background SVG slightly more pronounced in thechanged regions_via_countries⚫html Region Picker.

Did you know?

Ignoring the kludginess of codelines …



ipbit=ipbit.trim();

setTimeout(function(){ ipbit=ipbit.trim(); }, 5000);

… how do you think we arrived at the need to write the second line of code for our Region Picker? Goo … anyone, anyone? … guffaw

Sir, could you repeat the question?

Goo … guffaw

Sir, could you repeat the question?

Goo … guffaw

Sir, could you repeat the question?

Goo … guffaw

Sir, could you repeat the question?

… Goo … well, anyone, anyone? … Google Chrome web inspector. Rings any bells?!
.
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.
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… Okay, see you tomorrow. But catch up on the debugging and “watch” of variables dynamically before tomorrow’s lesson …

Previous relevant Google Charts Geo Chart Region Picker Alignment Tutorial is shown below.

Google Charts Geo Chart Region Picker Alignment Tutorial

Google Charts Geo Chart Region Picker Alignment Tutorial   🔍

In our inhouse Region Picker we like the way the right hand webpage side involved some useful …



position: sticky;

… positioning, useful within the realms of what is going on on the right hand side.

But now we’re wanting some horizontal integration, linking commonalities of left and right regarding the country of interest, as a user’s eyes scan across the webpage, at pivotal times.

Our new Javascript functions to help, today, further to the recent Google Charts Geo Chart Region Picker Shading Tutorial …



var glincode='';



function prebrize() {

if (glincode != '') {

document.getElementById('a' + glincode).scrollIntoView();

}

}



function brizetwo(pb, lincode) {

if (eval('' + lincode.length) == 2) {

glincode=lincode;

document.getElementById('a' + lincode).scrollIntoView();

setTimeout(function(){ document.getElementById('a' + lincode).scrollIntoView(); document.getElementById('mychart').style.paddingTop='' + document.body.scrollTop + 'px'; }, 6000);

}

return brize(pb);

}



function brize(pb) {

var torectx=null, vsrectx=null, aidis='';

var torectxtop=0;

if (eval('' + andynft.length) == 8) {

aidis='a' + andynft.split('title=')[1];

if (pb == '') {

torectx=document.getElementById(aidis).getBoundingClientRect();

if (document.getElementById('pspacer')) {

document.getElementById('pspacer').height='' + torectx.top + 'px';

} else if (document.getElementById('language')) {

document.getElementById('language').style.paddingTop='' + eval(eval('' + torectx.top) + eval('' + document.body.scrollTop)) + 'px';

} else if (document.getElementById(aidis) && document.getElementById('mychart')) {

document.getElementById('mychart').style.paddingTop='' + eval(eval('' + torectx.top) + eval('' + document.body.scrollTop)) + 'px';

}

} else {

if (document.getElementById(aidis) && document.getElementById('mychart')) {

torectx=document.getElementById(aidis).getBoundingClientRect();

vsrectx=document.getElementById('mychart').getBoundingClientRect();

document.getElementById('mychart').style.paddingTop='' + eval(eval('' + torectx.top) + eval('' + document.body.scrollTop) - eval('' + vsrectx.top)) + 'px';

return pb;

} else if (document.getElementById(aidis) && document.getElementById('language')) {

torectx=document.getElementById(aidis).getBoundingClientRect();

vsrectx=document.getElementById('language').getBoundingClientRect();

document.getElementById('language').style.paddingTop='' + eval(eval('' + torectx.top) + eval('' + document.body.scrollTop) - eval('' + vsrectx.top)) + 'px';

}

}

}

return pb;

}

… all feature the great [element].scrollIntoView() way to programmatically scroll, rather than use (the sometimes ignored) window.scrollTo([left],[top]); or location.href=’#[elementID]’; approaches. It has the advantage of not altering location.hash (if you see that as a plus). We’d rather not add complexity, so, yes, we prefer the [aCountryElement].scrollIntoView(); call approach, at those pivotal times. This accounts for the left hand side of the webpage agreeing to the right hand side’s vertical scroll position. But what about the other way around? There, we started applying a CSS padding-top property to relevant right hand side elements (via DOM [element].style.paddingTop=[pixelsToExtendDown]px;), at pivotal points in the programming flow.

And on double clicking a right hand side button to start creating those background Geo Chart SVG based “images” we turn on a progress cursor, at least for non-mobile platforms, because the user needs patience here, in thechanged regions_via_countries⚫html Region Picker.

Previous relevant Google Charts Geo Chart Region Picker Shading Tutorial is shown below.

Google Charts Geo Chart Region Picker Shading Tutorial

Google Charts Geo Chart Region Picker Shading Tutorial   🔍

We have a few major improvements onto yesterday’s Google Charts Geo Chart Region Picker Nesting Tutorial‘s work …

  • shading of country in the Google Charts Geo Chart …
  • addition of event logic for the “overlay/underlay/arriba” Google Charts Geo Chart incarnation … via Javascript DOM dynamic manipulation of Geo Chart z-index via …


    function reposition() {

    document.getElementById(gaid).style.display='block';

    var nrect=document.getElementById(gaid).getBoundingClientRect();

    document.getElementById(gulid).style.top='' + eval(eval('' + nrect.top) + eval('' + document.body.scrollTop)) + 'px';

    document.getElementById(gulid).style.left='' + eval(eval('' + nrect.left) + eval('' + document.body.scrollLeft)) + 'px';

    document.getElementById(gulid).style.width='' + nrect.width + 'px';

    document.getElementById(gulid).style.height='' + nrect.height + 'px';

    if (('' + document.getElementById(gulid).style.zIndex).indexOf('-') != -1) {

    document.getElementById(gulid).style.zIndex='' + ('' + document.getElementById(gulid).style.zIndex).replace('-','');

    } else {

    document.getElementById(gulid).style.zIndex='-' + ('' + document.getElementById(gulid).style.zIndex).replace('-','');

    }

    }


    … effectively toggling between “overlay” and “underlay” … arriba
  • oncontextmenu (ie. right click) means by which any clashing region name text can be “unclashed”

Codewise, this needed ..

… with WordPress blog 404.php helper changes as per …

<?php


function yourfile_get_contents($wone) { //, $ucc, $ctname) {

global $geomapurl, $getmapdata, $iso_country_codes; // <a href="/wiki/Autonomous_Republic_of_Crimea" title="Autonomous Republic of Crimea">Avtonomna Respublika Krym</a>

// %20[51.4769|-0.0005|~From~,2]%20,%20[51.4769|-0.0005|~To~,2]%20,

// <img style="z-index:25;" onload=" return true; " id="ici" data-onmouseout="this.title=origtitle;" onmousemove=" if (isclear || 1 == 1) { document.getElementById('moimode').value='mouseover'; filloutform(event,0); }" src="//www.rjmprogramming.com.au/ITblog/455/350/?cht=map&chld=AF|AF-BDG|AF-BGL|AF-BAL|AF-BAM|AF-DAY|AF-FRA|AF-FYB|AF-GHA|AF-GHO|AF-HEL|AF-HER|AF-JOW|AF-KAB|AF-KAN|AF-KAP|AF-KHO|AF-KNR|AF-KDZ|AF-LAG|AF-LOG|AF-NAN|AF-NIM|AF-NUR|AF-PKA|AF-PIA|AF-PAN|AF-PAR|AF-SAM|AF-SAR|AF-TAK|AF-URU|AF-WAR|AF-ZAB|&chco=B3BCC0|5781AE|FF0000|FFC726|885E80|518274|A3BCC0|4781AE|EF0000|EFC726|785E80|418274|7ccdef|e65814|477b73|87f592|ed75f2|09526e|27a51c|58c662|4b4840|7d01b5|f6a557|b69f63|cac10b|f3e9ab|26192c|ad7629|3b21b4|7238ab|aa1e07|23f0d7|d8dfb3|8c07c2|7a5bbf|b0ee12&screenheight=900" title="Optionally click in relevant region for menu">

if (file_exists('../HTMLCSS/rvc_' . my_s_s_server_remote_addr() . '.html')) {

sleep(5);

unlink('../HTMLCSS/rvc_' . my_s_s_server_remote_addr() . '.html');

}

$iso_underscore=false;

$ucc='';

$ctname='';

$okwone='';

$ones=[];

if (strpos($wone, 'chld=') === false) {

return @file_get_contents($wone);

} else if (1 == 1 || strpos($wone, 'screenheight=') !== false) {

$ucc=strtoupper(trim(explode('_', explode('|', explode('chld=', $wone)[1])[0])[0]));

for ($ire=0; $ire<sizeof($iso_country_codes); $ire+=2) {

if ($ucc == strtoupper($iso_country_codes[$ire])) {

$ctname=$iso_country_codes[1 + $ire];

}

}

$okwone=file_get_contents($wone);

$wone='//en.wikipedia.org/wiki/ISO_3166-2:' . $ucc;

}

if (strlen($ucc) != 2) {

return @file_get_contents($wone);

}

$tbit=$ucc . ';' . $ctname;

$geomapurl='';

$wpg='';

$ones=[];

$preurl='';

$saveducc=@file_get_contents('saveducc.txt');

$linfnd=explode($ucc . '=', $saveducc);

if (sizeof($linfnd) > 1) {

$geomapurl=explode("\n", $linfnd[1])[0];

}

file_put_contents('xcc.xcc', $tbit . ' ' . $wone);

if (strpos($wone, '/wiki/') !== false && strpos($wone, 'http') !== false) {

$preurl='http' . explode('/wiki/', explode('http', $wone)[-1 + sizeof(explode('http', $wone))])[0];

}

$one=file_get_contents($wone);

if ($geomapurl != '') {

sleep(9);

} else {

file_put_contents('xccone.xcc', $preurl . ' ... ' . $one);

if (strpos($one, ' sortable"') !== false && $preurl != '') {

$ones=explode('<a href="/wiki/', explode(' sortable"', explode("See also ", $one)[0])[1]);

} else if ($preurl != '') {

$ones=explode('<a href="/wiki/', explode("See also ", $one)[0]);

}



for ($ii=1; $ii<sizeof($ones); $ii++) {

if (!$iso_underscore) {

$rname=explode('<', explode('>', $ones[$ii])[1])[0];

if (substr(($rname . ' '),0,3) == 'ISO') { $iso_underscore=true; }

if ($ii == 1) {

file_put_contents('xccuccit.xcc', $ucc . ' - ' . $rname . "\n");

}

if (trim($rname) != '') {

file_put_contents('xccu.xcc', $preurl . '/wiki/' . explode('"', $ones[$ii])[0]);

$wpg=file_get_contents($preurl . '/wiki/' . explode('"', $ones[$ii])[0]);

$rname=str_replace('_',' ',explode('"', $ones[$ii])[0]);

file_put_contents('xccuc.xcc', $wpg);

$wpgs=explode(' class="geo">', $wpg);

if (sizeof($wpgs) > 1) {

file_put_contents('xccuu.xcc', $preurl . '/wiki/' . explode('"', $ones[$ii])[0]);

$ltlg=str_replace(' ','',str_replace(';',',',explode('<', $wpgs[1])[0]));

file_put_contents('xccuuu.xcc', $ltlg);

if ($geomapurl != '') { $geomapurl.=','; }

$geomapurl.=str_replace("%27","+","%20[" . str_replace(',','|',$ltlg) . '|~' . str_replace("%27","+",str_replace('%27~','~',urlencode($rname) . '~')) . ',2]%20');

file_put_contents('xcz.xc', $geomapurl);

file_put_contents('xccuccit.xcc', file_get_contents('xccuccit.xcc') . $ii . ' : ' . str_replace("%27","+","%20[" . str_replace(',','|',$ltlg) . '|~' . str_replace("%27","+",str_replace('%27~','~',urlencode($rname) . '~')) . ',2]%20') . "\n");

} else {

file_put_contents('xccuccit.xcc', file_get_contents('xccuccit.xcc') . $ii . ' ; ' . explode('"', $ones[$ii])[0] . "\n");

}

}

}

}

}



if ($geomapurl != '') {

if (sizeof($linfnd) <= 1) {

file_put_contents('saveducc.txt', $saveducc . $ucc . '=' . $geomapurl . "\n");

}

file_put_contents('xc.xc', $geomapurl);

if (strlen('/PHP/GeoChart/geo_chart.php#onclick=y&retsvg=y&overlay=a' . $ucc . '&text=text&wouldlikeyoutoseekpermission=y&width=834&height=520&country=Places&popularity=&aregeographicals=y&title=' . urlencode($tbit) . '&data=' . $geomapurl) < 850) {

file_put_contents('../HTMLCSS/rvc_' . my_s_s_server_remote_addr() . '.html', '<html><head><scri' . 'pt type=text/javascript> var aconto=null; function flowthrough(iois) { aconto = (iois.contentWindow || iois.contentDocument); if (aconto != null) { if (aconto.document) { aconto = aconto.document; } } if (window.opener) { if (window.opener.setifrmoreacontochild) { window.opener.setifrmoreacontochild(aconto); } } } </scr' . 'ipt></head><body><iframe onload=flowthrough(this); style=width:98%;height:98%; src="/PHP/GeoChart/geo_chart.php#onclick=y&retsvg=y&overlay=a' . $ucc . '&shade=' . $ucc . '&iso=' . $ucc . '&text=text&wouldlikeyoutoseekpermission=y&width=834&height=520&country=Places&popularity=&aregeographicals=y&title=' . urlencode($tbit) . '&data=' . unduplicate($geomapurl) . '"></iframe></body></html>');

} else {

file_put_contents('../HTMLCSS/rvc_' . my_s_s_server_remote_addr() . '.html', '<html><head><scri' . 'pt type=text/javascript> var aconto=null; function flowthrough(iois) { aconto = (iois.contentWindow || iois.contentDocument); if (aconto != null) { if (aconto.document) { aconto = aconto.document; } } if (window.opener) { if (window.opener.setifrmoreacontochild) { window.opener.setifrmoreacontochild(aconto); } } } </scr' . 'ipt></head><body><iframe onload=flowthrough(this); style=width:98%;height:98%; src="/PHP/GeoChart/geo_chart.php#onclick=y&retsvg=y&overlay=a' . $ucc . '&shade=' . $ucc . '&iso=' . $ucc . '&text=text&wouldlikeyoutoseekpermission=y&width=834&height=520&country=Places&popularity=&aregeographicals=y&title=' . urlencode($tbit) . '&data=' . unduplicate($geomapurl) . '"></iframe></body></html>');

}



// '<html><body><iframe style=width:98%;height:98%; src="/PHP/GeoChart/geo_chart.php#onclick=y&text=text&wouldlikeyoutoseekpermission=y&width=834&height=520&country=Places&popularity=&aregeographicals=y&title=' . urlencode($tbit) . '&data=' . $geomapurl . '"></iframe></body></html>');

//if (file_exists('../rvc_' . my_s_s_server_remote_addr() . '.html')) {

// sleep(35);

// unlink('../rvc_' . my_s_s_server_remote_addr() . '.html');

//}

}



return $okwone;

}



function unduplicate($inbn) {

$outbn=$inbn;

$thiso='';

$sofarfound=';';

$outbs=explode('|~', $inbn);

for ($iout=1; $iout<sizeof($outbs); $iout++) {

$thiso=explode('~', $outbs[$iout])[0];

if (strpos($sofarfound, ';' . $thiso . ';') !== false) {

$youtbs=explode('|~' . $thiso . '~', $outbn);

for ($jout=2; $iout<sizeof($youtbs); $jout++) {

$outbn=str_replace('~' . $thiso . '~' . $youtbs[$jout], '~' . '~' . $youtbs[$jout], $outbn);

}

} else {

$sofarfound.=$thiso . ';';

}

}

return $outbn;

}


?>

Previous relevant Google Charts Geo Chart Region Picker Nesting Tutorial is shown below.

Google Charts Geo Chart Region Picker Nesting Tutorial

Google Charts Geo Chart Region Picker Nesting Tutorial   🔍

It was really our inhouse Region Picker web application we had in mind behind the “create a map background” motivations of yesterday’s Google Charts Geo Chart Nesting Tutorial.

We found trying the …

… with more success.

We can’t remember a “foreground overlay” scenario so resembling a “background image feeling” end result, the transparent colour introduced into the Google Charts Geo Chart SVG being crucial to help make this all work.

Previous relevant Google Charts Geo Chart Nesting Tutorial is shown below.

Google Charts Geo Chart Nesting Tutorial

Google Charts Geo Chart Nesting Tutorial   🔍

Today we’re working on more Google Charts Geo Chart inhouse web application interfacer functionality other web applications might be able to make use of … “tool” functionality, if you will.

We want to be able to control the way a Google Charts Geo Chart can be nested within an HTML div element, for instance. We started the day wanting to be able to make …

… and offering user control over the resultant Google Charts Geo Chart …

  1. width
  2. height
  3. latitude
  4. longitude
  5. place(s)

… further to the previous progress regarding Google Charts Geo Charts when we presented TimeZone Places Nearest Places Tweak Tutorial.

Our first draft geotest⚫html “proof of concept” tests of this are available here.

Previous relevant TimeZone Places Nearest Places Tweak Tutorial is shown below.

TimeZone Places Nearest Places Tweak Tutorial

TimeZone Places Nearest Places Tweak Tutorial   🔍

When we presented GeoJson World Countries Drag and Drop Makeover Nuance Tutorial we tweaked our inhouse TimeZone Places PHP web application. But it needs a “re-tweak”.

In that Nearest Places form part of the TimeZone places webpage, we noticed that even when shaping to enter a TimeZone Placename in the first textbox we made no attempt to fill in …

  • latitude
  • longitude

… when we have the information to do so, and even if we’re misunderstanding a placename designation, that should not stop us from trying, because those two numerical fields above can be corrected, and the form resubmitted, in these scenarios.

Apart from making a PHP derived Javascript variable be made available to the code, we “wrap” …

<?php


$otherform="<br><br><iframe id=nearestif name=nearestif style=display:none; src=about:none></iframe><div id=nearest></div><form target=nearestif action=./tz_places.php method=GET style=background-color:#f0f0f0;>Place: <input onblur=\" if (this.value.length > 0) { document.getElementById('nearestif').src=perhapsfillin('./tz_places.php?latitude=&longitude=&place=' + encodeURIComponent(this.value)); } \" type=text id=nplace name=place value=></input> Latitude: <input type=number id=latitude name=latitude value=0.0000 max=90.0000 min=-90.0000 step=0.0001></input> Longitude: <input type=number id=longitude name=longitude value=0.0000 max=180.0000 min=-180.0000 step=0.0001></input><br><input style=background-color:orange; type=submit id=inearest value='Nearest TimeZone Places'></input></form>";


?>

… the “a” link content call via …

<?php echo ”


function perhapsfillin(inidea) {

// './tz_places.php?latitude=&longitude=&place=' + encodeURIComponent(this.value))

var outidea=inidea;

if (inidea.indexOf('place=') != -1) {

var inplaceis=decodeURIComponent(inidea.split('place=')[1].split('&')[0].split('#')[0]);

// +07'>Asia/Tomsk</option><option value='Europe/London' data-geo='51.5074,-0.1278,BST,GB,+0'>Europe/London</

if (yourtzlist.toLowerCase().indexOf('/' + inplaceis.toLowerCase().replace(/\ /g,'_') + '<') != -1) {

document.getElementById('latitude').value='' + eval('' + yourtzlist.toLowerCase().split('/' + inplaceis.toLowerCase().replace(/\ /g,'_') + '<')[0].split(' data-geo=')[eval(-1 + yourtzlist.toLowerCase().split('/' + inplaceis.toLowerCase().replace(/\ /g,'_') + '<')[0].split(' data-geo=').length)].substring(1).split(',')[0]).toPrecision(6);

document.getElementById('longitude').value='' + eval('' + yourtzlist.toLowerCase().split('/' + inplaceis.toLowerCase().replace(/\ /g,'_') + '<')[0].split(' data-geo=')[eval(-1 + yourtzlist.toLowerCase().split('/' + inplaceis.toLowerCase().replace(/\ /g,'_') + '<')[0].split(' data-geo=').length)].substring(1).split(',')[1]).toPrecision(6);

outidea=outidea.replace('latitude=' + inidea.split('latitude=')[1].split('&')[0].split('#')[0], 'latitude=' + document.getElementById('latitude').value);

outidea=outidea.replace('longitude=' + inidea.split('longitude=')[1].split('&')[0].split('#')[0], 'longitude=' + document.getElementById('longitude').value);

}

}

return outidea;

}


“; ?>

… in thechanged TimeZone Places tz_places⚫php

Previous relevant GeoJson World Countries Drag and Drop Makeover Nuance Tutorial is shown below.

GeoJson World Countries Drag and Drop Makeover Nuance Tutorial

GeoJson World Countries Drag and Drop Makeover Nuance Tutorial   🔍

Nuance alert! We’re not sure if you noticed, but if you tried out the Drag and Drop functionality in the World Countries web application of yesterday’s GeoJson World Countries Drag and Drop Makeover Tutorial you may have noticed …

  • for a country with lots of TimeZone places, like Brazil, you could get a decent Google Chart Geo Chart map up … but if you were to click the “Map?” link down the bottom of that iframe …
  • it would fail to show a Google Chart Map Chart for that country’s TimeZone places

This fix, believe it or not, is interesting, perhaps only in an “internal use only” sense, we grant you. But our solution got us delving even more into hashtagging data, so that the solution we came up with was a hybrid whereby …

  • stayed with PHP $_GET[] (ie. address bar ? and & argumented) data (versus using PHP $_POST[] methodologies) … but …
  • where it came to the &data=[most of the data] part, other than its first character, we hashtagged the rest

… so that the logic flows as per usual, but we intervene at places and flesh it out via location.hash (client side only) means. We won’t bore you too much with all the places of intervention except the receiving map.php’s “easiest to get” intervention …

<?php


$gtw="";



if (isset($_POST['title'])) {

foreach ($_POST as $name => $val) {

if (strpos($val, 'data:') !== false) {

$fval=urlencode($val); //str_replace(" ", "%20", str_replace("'", urlencode("'"), str_replace('"', urlencode('"'), str_replace('=', urlencode('='), str_replace('>', urlencode('>'), str_replace('<', urlencode('<'), str_replace('?', urlencode('?'), str_replace('&', urlencode('&'), $val))))))));

} else {

$fval=str_replace('+','%20',urlencode(str_replace(' ',' + ',str_replace('+',' ',$val)))); //str_replace(" ", "%20", str_replace("'", urlencode("'"), str_replace('"', urlencode('"'), str_replace('=', urlencode('='), str_replace('>', urlencode('>'), str_replace('<', urlencode('<'), str_replace('?', urlencode('?'), str_replace('&', urlencode('&'), $val))))))));

}

if ($shto == "") {

$shto="#" . $name . "=" . $fval; //str_replace(" ", "%20", str_replace("'", urlencode("'"), str_replace('"', urlencode('"'), str_replace('=', urlencode('='), str_replace('>', urlencode('>'), str_replace('<', urlencode('<'), str_replace('?', urlencode('?'), str_replace('&', urlencode('&'), $val))))))));

} else {

$shto.="&" . $name . "=" . $fval; //str_replace(" ", "%20", str_replace("'", urlencode("'"), str_replace('"', urlencode('"'), str_replace('=', urlencode('='), str_replace('>', urlencode('>'), str_replace('<', urlencode('<'), str_replace('?', urlencode('?'), str_replace('&', urlencode('&'), $val))))))));

}

}

}



if (isset($_GET['data'])) {

foreach ($_GET as $name => $val) {

if (strpos($val, 'data:') !== false) {

$fval=urlencode($val); //str_replace(" ", "%20", str_replace("'", urlencode("'"), str_replace('"', urlencode('"'), str_replace('=', urlencode('='), str_replace('>', urlencode('>'), str_replace('<', urlencode('<'), str_replace('?', urlencode('?'), str_replace('&', urlencode('&'), $val))))))));

} else {

//$fval=str_replace('+','%20',urlencode($val)); //str_replace(" ", "%20", str_replace("'", urlencode("'"), str_replace('"', urlencode('"'), str_replace('=', urlencode('='), str_replace('>', urlencode('>'), str_replace('<', urlencode('<'), str_replace('?', urlencode('?'), str_replace('&', urlencode('&'), $val))))))));

$fval=str_replace('+','%20',urlencode(str_replace(' ',' + ',str_replace('+',' ',$val)))); //str_replace(" ", "%20", str_replace("'", urlencode("'"), str_replace('"', urlencode('"'), str_replace('=', urlencode('='), str_replace('>', urlencode('>'), str_replace('<', urlencode('<'), str_replace('?', urlencode('?'), str_replace('&', urlencode('&'), $val))))))));

}

if ($shto == "") {

$gshto="#" . $name . "=" . $fval; //str_replace(" ", "%20", str_replace("'", urlencode("'"), str_replace('"', urlencode('"'), str_replace('=', urlencode('='), str_replace('>', urlencode('>'), str_replace('<', urlencode('<'), str_replace('?', urlencode('?'), str_replace('&', urlencode('&'), $val))))))));

} else {

$gshto.="&" . $name . "=" . $fval; //str_replace(" ", "%20", str_replace("'", urlencode("'"), str_replace('"', urlencode('"'), str_replace('=', urlencode('='), str_replace('>', urlencode('>'), str_replace('<', urlencode('<'), str_replace('?', urlencode('?'), str_replace('&', urlencode('&'), $val))))))));

}

}



if ($gshto != '' && strlen($_GET['data']) < 10) {

$gtw="\n

if (document.URL.split('#')[0].indexOf('?') != -1 && decodeURIComponent(decodeURIComponent(('' + location.hash + 'x'))).indexOf('[') == 1) {

var jformoh='<iframe name=lastfig id=lastfig style=\"position:absolute;width:100%;height:100%;z-index:897;top:0px;left:0px;\" src=></iframe><br><form style=display:none; target=_self method=POST action=\"' + document.URL.split('#')[0].split('?')[0] + '\"><input id=gjformsubis type=submit value=Submit style=display:none;></input></form>';

var iiareflds=0, areflds=(document.URL.split('#')[0] + decodeURIComponent(decodeURIComponent((',' + location.hash.substring(1))))).replace('#','&').replace('?','&').split('=');

for (var iiareflds=1; iiareflds<areflds.length; iiareflds++) {

jformoh=jformoh.replace('</form>','<input type=hidden name=\"' + areflds[eval(-1 + iiareflds)].split('&')[eval(-1 + areflds[eval(-1 + iiareflds)].split('&').length)] + '\" value=\"' + decodeURIComponent(areflds[iiareflds].split('&')[0]).replace(/^%2C/g,'').replace(/\,1\]/g,']').replace(/\|/g,',').replace(/\,\,/g,',') + '\"></input></form>');

}

setTimeout(function() {

document.body.innerHTML+=jformoh;

document.getElementById('gjformsubis').click(); }, 7000);

}

";

}

}


?>

… just a matter of concern for …

… using the World✂Countries GeoJson web application.

Previous relevant GeoJson World Countries Drag and Drop Makeover Tutorial is shown below.

GeoJson World Countries Drag and Drop Makeover Tutorial

GeoJson World Countries Drag and Drop Makeover Tutorial   🔍

In a similar vein to the recent GeoJson World Coastlines Drag and Drop Makeover Tutorial, today, we have got a mild makeover happening with the Drag and Drop functionality related to GeoJson World Countries web application usage.

In addition to the Wikipedia information, at the very least, presented following a successful drag and drop operation, from today, we also start presenting a new HTML iframe element containing …

Nearest TimeZone places along with Google Charts for each unique country involved

… used by thatchanged TimeZone Places tz_places⚫php helped out by thechanged external Javascript countries⚫js external Javascript all called by our unchanged GeoJson World Countries web application.

The work from that last makeover helped, and today the changes involve …

In tz_places.php start doing what you did for regions.php now for countries.php
<?php


echo "<!doctype html><html><body onload=\"if (('' + top.document.URL).replace('/countries.','/regions.').indexOf('/regions.') != -1) { if (document.getElementById('snearest')) { document.getElementById('snearest').style.left='0px'; } }\" style='background-color:yellow;" . $backstyle . "'><h1>Nearest Timezones ... RJM Programming ... April, 2018 ... <a target=_blank title='Thanks to ...' href='//php.net/manual/en/datetimezone.getlocation.php'>//php.net/manual/en/datetimezone.getlocation.php</a></h1><br><br><br>" . $pd . $ret . "</body></html>";


?>
And in countries.js intervene in the dragover event


target.addEventListener("dragover", (ev) => {

console.log("dragOver");

if (window.parent) {

if (parent.document.URL.indexOf('/countries.') != -1) {

var ftables=parent.document.getElementsByTagName('table');

if (eval('' + ftables.length) > 0) {

if (ftables[0].innerHTML.indexOf('lastrow') == -1) {

ftables[0].innerHTML+='<tr id=lastrow><td><iframe id=lastif style=display:none;width:100%;height:900px; src="/PHP/tz_places.php"></iframe></td></tr>';

}

}

}

}

ev.preventDefault();

});
Intervene again, where applicable


if (parent.document.URL.indexOf('/regions.') != -1) {

window.open('/PHP/tz_places.php?place=&latitude=' + encodeURIComponent('' + parent.derivethislat(pos4)) + '&longitude=' + encodeURIComponent('' + parent.derivethislong(pos3)) + '&ntztontz=y','_blank','top=180,left=' + eval(-350 + screen.width) + ',width=350,height=600');

} else {

if (parent.document.getElementById('lastif')) {

parent.document.getElementById('lastif').style.display='block';

parent.document.getElementById('lastif').src='/PHP/tz_places.php?place=&latitude=' + encodeURIComponent('' + parent.derivethislat(pos4)) + '&longitude=' + encodeURIComponent('' + parent.derivethislong(pos3)) + '&ntztontz=y';

}

window.open('//wikipedia.org/wiki/' + encodeURIComponent(tdid.replace(/\ /g,'_')),'_blank','top=180,left=' + eval(-350 + screen.width) + ',width=350,height=600');

}

Previous relevant GeoJson World Coastlines Drag and Drop Makeover Tutorial is shown below.

GeoJson World Coastlines Drag and Drop Makeover Tutorial

GeoJson World Coastlines Drag and Drop Makeover Tutorial   🔍

We’ve got a mild makeover happening with the Drag and Drop functionality related to GeoJson World Coastlines Drag and Drop Tutorial today.

At first …

… used by thatchanged TimeZone Places tz_places⚫php as exemplified below …

<?php


echo "<!doctype html><html><head><scr" . "ipt type='text/javascript' src='/HTMLCSS/countries.js?rand=" . rand(0,16756453) . "'></scr" . "ipt><scr" . "ipt type='text/javascript'> function lookoutfortop() { if (parent.document.getElementById('getmell')) { parent.document.getElementById('nearest').innerHTML=\"" . $pd . $retmore . "\"; } else if (top.document.getElementById('nearest')) { if (top.document.getElementById('getmell')) { top.document.getElementById('nearest').innerHTML=\"" . $pd . $retmore . "\"; } else { top.document.getElementById('nearest').innerHTML=\"" . $pd . $ret . "\"; } top.window.scrollTo(0,0); } else { if (top.document.getElementById('getmell')) { document.body.innerHTML=tzagain(\"" . $pd . $retmore . "\"); } else { document.body.innerHTML=tzagain(\"" . $pd . str_replace(':70px;',':0px;',str_replace(':350px;',':0px;',$ret)) . "\"); } } if (('' + top.document.URL).indexOf('/regions.') != -1) { if (document.getElementById('snearest')) { document.getElementById('snearest').style.left='0px'; } } } </scr" . "ipt></head><body onload=' lookoutfortop();'" . $backfullstyle . ">" . $pd . $ret . "</body></html>"; //$ret;


?>

… that superfluous looking ?rand=blah measure being pretty useful really regarding getting around the cache keeping old external Javascript in its mind after changes.

Curiously, the grandparent regions.php starting off all this needed no changing! We hope you like these tweaks!

Previous relevant GeoJson World Coastlines Drag and Drop Tutorial is shown below.

GeoJson World Coastlines Drag and Drop Tutorial

GeoJson World Coastlines Drag and Drop Tutorial   🔍

The primary aim of today’s work, onto yesterday’s GeoJson World Drag and Drop on iPad Tutorial iPad integration is to …

  • add similar drag and drop logic into our World Coastlines GeoJson web application … and along the way, also for the World Countries web application …
  • hold off involving the (pretty kludgy looking) vertical scrollbar of our drag and drop pin’s underlying HTML iframe …


    <iframe scrolling=no frameborder=0 name=iftr id=iftr style=display:none; srcdoc="<body style=background-color:transparent;><p id=mg title='Wikipedia country page below via drag and drop to world map' draggable='true'>📍</p><br><br><div id=myh1></div><script type='text/javascript' src='./countries.js?rand=321156747657' defer></script></body>" data-src=></iframe>


    … until the first drag operation starting, calls on …


    parent.document.getElementById('iftr').scrolling='yes';


    … proving a Javascript DOM control of the “scrolling” attribute works (as we weren’t sure, having never done this before)

It’s worth beavering away at a guinea pig web application until (just about complete) satisfaction (for now) before having a parallel set of code changes happening simultaneously, we’ve always found.

So, what happened in “external Javascript land”? No need for a “regions.js” here, as parent.document.URL can be scrutinised in that “external Javascript land” to discover which web application is the parent, and act accordingly. So changed were ourchanged external Javascript countries⚫js in …

Previous relevant GeoJson World Drag and Drop on iPad Tutorial is shown below.

GeoJson World Drag and Drop on iPad Tutorial

GeoJson World Drag and Drop on iPad Tutorial   🔍

Yesterday’s GeoJson World Drag and Drop Google Tutorial had us at a very interesting position, one that we cannot recall ever happening before, that being …

  • our GeoJson World Countries web application Drag and Drop logic worked on an iPhone … but …
  • our GeoJson World Countries web application Drag and Drop logic did not work on an iPad

They’re both iOS! And usually the smaller iPhone has the problem and the larger iPad is okay when there is an odd scenario happening. So, what gives? Well, the odd thing is, it was just rearrangements of code and iframe srcdoc usage …



<iframe frameborder=0 name=iftr id=iftr style=display:none; srcdoc="<body style=background-color:transparent;><p id=mg title='Wikipedia country page below via drag and drop to world map' draggable='true'>📍</p><br><br><div id=myh1></div><script type='text/javascript' src='./countries.js?rand=321156747657' defer></script></body>" data-src=></iframe>

… that ended up helping us fix the issues. Figure this, on iPad our emoji pin could not be made visible down the bottom left of iPad screen but could be made to work in the title elements section?! Of course, we might have been having a bad day, but in our defence, even debugging in Safari via …

  • iPad Safari web browser invocation …
  • Apple white lead from iPad to MacBook Air …
  • MacBook Air Safari web browser Develop menu dropdown got us to debugging functionality

… showed nothing untoward, and neither did, on the iPad’s Chrome browser …



chrome://inspect

… debugging techniques.

Changed were ourchanged external Javascript countries⚫js in ourchanged countries⚫php GeoJson World Countries PHP web application in a new window. If you have any clues yourself, the comments are there?!

Previous relevant GeoJson World Drag and Drop Google Tutorial is shown below.

GeoJson World Drag and Drop Google Tutorial

GeoJson World Drag and Drop Google Tutorial   🔍

We often turn to what we like to call …

  • “long hover” (ie. on non-mobile, wait for a long while after the onmouseover event initiation to see whether the user is still hovering) … and today, a bit like that, is the new, for us …
  • “long drag” (the user waits a long time between the drag initialization and the drop event)

… and because we found “dawdling” on a drag and drop fairly unnatural, we think this “long drag” idea “has legs”, in that it works well as a deliberate act made by a user, knowing at the end they benefit from their actions. For us, with our GeoJSON Map web application, yesterday, with GeoJson World Drag and Drop Pin Tutorial, the drag and drop led to …

  • Wikipedia country information webpage … and today, we allow a “long drag” get you to …
  • Google Maps drop position information webpage … if the “long drag” is for 10 or more seconds …
  • Google Earth drop position information webpage … if the “very long drag” is for 20 or more seconds

… arranged for via ourchanged external Javascript countries⚫js in ourchanged countries⚫php GeoJson World Countries PHP web application in a new window.

Previous relevant GeoJson World Drag and Drop Pin Tutorial is shown below.

GeoJson World Drag and Drop Pin Tutorial

GeoJson World Drag and Drop Pin Tutorial   🔍

Before today, with the GeoJson Countries web application from GeoJson World Colour Wheel Wikipedia Integration Tutorial we’ve mainly used …

  • onclick event logic … and today, we start to also include …
  • drag and drop event logic (like, but nuanced as explained below, the experimental drag and drop ideas included in the recent Planet Moon Game Tutorial) … the nuanced differences involving …
    1. the drag part of the events occurs in an iframe (populated via small amount of srcdoc HTML and Javascript) able to reference its originator via window.parent …
    2. drop part of the events occurs in that originator parent and so several Javascript function called by the child reside in the parent … and …
    3. the child “drag” event controller uses the new external Javascript countries⚫js …


      // countries.js

      // July, 2023

      // RJM Programming

      // Help out countries.html and countries.php

      var pos3=0, pos4=0, tdid='', poligono, punto, coone='', prectis;



      // var poligono = [[2,9],[8,6],[12,10],[15,2],[10,4],[5,1]];

      // var punto = [6, 5];



      function pointInPolygon(polygon, point) { // thanks to https://community.appinventor.mit.edu/t/geofence-check-if-a-point-is-inside-a-polygon-javascript-map/57091

      var odd = false;

      for (var i = 0, j = polygon.length - 1; i < polygon.length; i++) {

      if (((polygon[i][1] > point[1]) !== (polygon[j][1] > point[1]))

      && (point[0] < ((polygon[j][0] - polygon[i][0]) * (point[1] - polygon[i][1]) / (polygon[j][1] - polygon[i][1]) + polygon[i][0]))) {

      odd = !odd;

      }

      j = i;

      }

      return odd;

      }



      function andlaterstill() {

      if (9 == 6) { // temporary

      if (tdid != '') {

      document.getElementById(tdid).innerHTML=document.getElementById(tdid).innerHTML.substring(0,1);

      } else if (document.getElementById('mytable').innerHTML.indexOf(clonedatatwo) != '') {

      document.getElementById('myh1').innerHTML=document.getElementById('myh1').innerHTML.split('</table>')[0] + '</table>';

      }

      if (document.getElementsByTagName('div')[0].innerHTML.indexOf(clonedatatwo) != -1) {

      document.getElementsByTagName('div')[0].innerHTML=document.getElementsByTagName('div')[0].innerHTML.replace(clonedatatwo,'');

      } else if (document.getElementsByTagName('div')[0].innerHTML.indexOf(clonedatatwo.replace('dragging','')) != -1) {

      document.getElementsByTagName('div')[0].innerHTML=document.getElementsByTagName('div')[0].innerHTML.replace(clonedatatwo.replace('dragging',''),'');

      } else if (document.body.innerHTML.split('<table')[0].indexOf(clonedatatwo.replace('dragging','')) != -1) {

      document.body.innerHTML=document.body.innerHTML.replace(document.body.innerHTML.split('<table')[0], document.body.innerHTML.split('<table')[0].replace(clonedatatwo.replace('dragging',''),''));

      } else if (document.body.innerHTML.split('<table')[0].indexOf(clonedatatwo) != -1) {

      document.body.innerHTML=document.body.innerHTML.replace(document.body.innerHTML.split('<table')[0], document.body.innerHTML.split('<table')[0].replace(clonedatatwo,''));

      }

      }

      tdid='';

      }



      function getprectis() {

      if (window.opener) {

      if (window.opener.document.getElementsByTagName('body')[0]) {

      return window.opener.document.body.getBoundingClientRect();

      } else if (window.parent) {

      if (parent.document.getElementsByTagName('body')[0]) {

      return parent.document.body.getBoundingClientRect();

      }

      }

      } else if (window.parent) {

      if (parent.document.getElementsByTagName('body')[0]) {

      return parent.document.body.getBoundingClientRect();

      }

      }

      return null;

      }



      function wod(ididea) {

      if (window.opener) {

      if (window.opener.document.getElementsByTagName(ididea)[0]) {

      return window.opener.document.getElementsByTagName(ididea)[0];

      } else if (window.parent) {

      if (parent.document.getElementsByTagName(ididea)[0]) {

      return parent.document.getElementsByTagName(ididea)[0];

      }

      }

      } else if (window.parent) {

      if (parent.document.getElementsByTagName(ididea)[0]) {

      return parent.document.getElementsByTagName(ididea)[0];

      }

      }

      return null;

      }



      function ccit() {

      var divs, esot=[], bodyois=null;

      if (window.opener) {

      if (window.opener.document.getElementsByTagName('body')[0]) {

      bodyois=window.opener.document.getElementsByTagName('body')[0];

      divs=window.opener.document.getElementsByTagName('div');

      } else if (window.parent) {

      if (parent.document.getElementsByTagName('body')[0]) {

      bodyois=parent.document.getElementsByTagName('body')[0];

      divs=parent.document.getElementsByTagName('div');

      }

      }

      } else if (window.parent) {

      if (parent.document.getElementsByTagName('body')[0]) {

      bodyois=parent.document.getElementsByTagName('body')[0];

      divs=parent.document.getElementsByTagName('div');

      }

      }



      for (var ii=0; ii<divs.length; ii++) {

      if (divs[ii].outerHTML.split('>')[0].indexOf(' title=' + String.fromCharCode(34) + coone) != -1) {

      divs[ii].innerHTML=divs[ii].innerHTML.replace('z-index:24;', 'z-index:123;').replace('lime;', 'rgba(200,200,200,0.3);');

      divs[ii].name='d' + tdid.replace(/\ /g, '_');

      }

      }

      }



      function andqlater() {

      //alert('HeRe');

      tdid='';

      var ppig='[]', coo='', coos=[], ip=0;

      var squares; //=window.opener.document.getElementsByTagName('area');



      if (window.opener) {

      if (window.opener.document.getElementsByTagName('body')[0]) {

      squares=window.opener.document.getElementsByTagName('area');

      } else if (window.parent) {

      if (parent.document.getElementsByTagName('body')[0]) {

      squares=parent.document.getElementsByTagName('area');

      }

      }

      } else if (window.parent) {

      if (parent.document.getElementsByTagName('body')[0]) {

      squares=parent.document.getElementsByTagName('area');

      }

      }



      for (var ii=1; ii<=squares.length; ii++) {

      ppig='[]';

      coos=squares[eval(-1 + ii)].coords.replace(/\ /g,',').split(',');

      ppig='[[' + coos[0] + ',' + coos[1] + ']]';

      for (ip=2; ip<coos.length; ip+=2) {

      ppig=ppig.replace(']]', '],[' + coos[ip] + ',' + coos[eval(1 + ip)] + ']]');

      poligono=eval(ppig);

      //alert('' + punto);

      if (pointInPolygon(poligono, punto)) {

      tdid='' + squares[eval(-1 + ii)].getAttribute('data-cname');

      coone=('' + squares[eval(-1 + ii)].coords).split(' ')[0];

      setTimeout(ccit, 2000);

      console.log('tdid=' + tdid + ' and coone=' + coone);

      if (window.opener) {

      if (window.opener.document.getElementsByTagName('body')[0]) {

      window.focus();

      document.getElementById('myh1').innerHTML='<iframe style="width:100%;height:800px;" src="//wikipedia.org/wiki/' + encodeURIComponent(tdid.replace(/\ /g,'_')) + '"></iframe>';

      } else if (window.parent) {

      if (parent.document.getElementsByTagName('body')[0]) {

      document.getElementById('myh1').innerHTML='<iframe style="width:100%;height:800px;" src="//wikipedia.org/wiki/' + encodeURIComponent(tdid.replace(/\ /g,'_')) + '"></iframe>';

      window.open('//wikipedia.org/wiki/' + encodeURIComponent(tdid.replace(/\ /g,'_')),'_blank','top=180,left=' + eval(-350 + screen.width) + ',width=350,height=600');

      }

      }

      } else if (window.parent) {

      if (parent.document.getElementsByTagName('body')[0]) {

      document.getElementById('myh1').innerHTML='<iframe style="width:100%;height:800px;" src="//wikipedia.org/wiki/' + encodeURIComponent(tdid.replace(/\ /g,'_')) + '"></iframe>';

      window.open('//wikipedia.org/wiki/' + encodeURIComponent(tdid.replace(/\ /g,'_')),'_blank','top=180,left=' + eval(-350 + screen.width) + ',width=350,height=600');

      }

      }

      return tdid;

      }

      }

      }

      console.log('tdid=' + tdid);

      //setTimeout(andlaterstill, 100);

      return '';

      }



      window.addEventListener("DOMContentLoaded", () => {

      const source = document.querySelector("#mg");

      console.log('source.id=' + source.id);

      source.addEventListener("dragstart", (ev) => {

      console.log("dragStart");

      // Change the source element's background color

      // to show that drag has started

      ev.currentTarget.classList.add("dragging");

      // Clear the drag data cache (for all formats/types)

      ev.dataTransfer.clearData();

      // Set the drag's format and data.

      // Use the event target's id for the data

      ev.dataTransfer.setData("text/plain", ev.target.id);

      //ev.dataTransfer.setData("text/html", ev.target.outerHTML);

      });

      source.addEventListener("dragend", (ev) =>

      ev.target.classList.remove("dragging")

      );



      const target = wod('body'); //window.opener.document.getElementsByTagName('body')[0];

      target.id='usemap';

      console.log('target.id=' + target.id);

      target.addEventListener("dragover", (ev) => {

      console.log("dragOver");

      ev.preventDefault();

      });

      target.addEventListener("drop", (ev) => {

      console.log("Drop");

      ev.preventDefault();

      // Get the data, which is the id of the source element

      const data = ev.dataTransfer.getData("text");

      const source = document.getElementById(data);



      var prectis=getprectis();



      console.log('' + ev.target.id);

      if (!document.getElementById('callback')) {

      if (('' + ev.target.id).substring(0,2) == 'im') {

      score+=eval(ev.target.innerHTML.substring(0,1));

      }

      } else if (1 == 1) { //document.getElementById('callback')) {

      secs++;

      if (('' + ev.target.getAttribute('data-answer')) == ('' + document.getElementById('mg').getAttribute('data-answer'))) {

      score++;

      document.getElementById('score').innerHTML='Score: ' + score + '/' + secs + '';

      } else {

      document.getElementById('score').innerHTML='Score: ' + score + '/' + secs + '';

      alert('Correct answer was ' + document.getElementById('mg').getAttribute('data-answer'));

      }

      location.href=document.getElementById('callback').value + '?score=' + score + '&secs=' + secs;

      }

      if (1 == 2) {

      //clonedatatwo=document.getElementById('source').outerHTML;

      //document.getElementById('mytable').innerHTML=document.getElementById('mytable').innerHTML.replace(clonedatatwo, '');

      //ev.target.innerHTML=ev.target.innerHTML.substring(0,1) + clonedatatwo;

      } else if ((9 == 9 || ('' + ev.target.id).substring(0,2) == 'im')) {

      //clonedatatwo=document.getElementById('source').outerHTML;

      // // andqlater();

      //document.getElementById('mytable').innerHTML=document.getElementById('mytable').innerHTML.replace(clonedatatwo, '');

      //ev.target.innerHTML=ev.target.innerHTML.substring(0,1) + clonedatatwo;

      //document.getElementById('myh1').appendChild(source);

      //if (('' + ev.target.id).substring(0,2) != 'im') {

      //document.getElementById('myh1').insertAdjacentHTML('beforeend', clonedatatwo);

      //} else {

      //ev.target.insertAdjacentHTML('beforeend', clonedatatwo);

      //}

      } else {

      ev.target.appendChild(source);

      }



      prectis=getprectis();



      if (ev.touches) {

      if (ev.touches[0].pageX) {

      pos3 = ev.touches[0].pageX;

      pos4 = ev.touches[0].pageY;

      } else {

      pos3 = ev.touches[0].clientX;

      pos4 = ev.touches[0].clientY;

      }

      console.log('pos3 = ' + pos3 + ',pos4 = ' + pos4);

      } else if (ev.clientX || ev.clientY) {

      pos3 = ev.clientX;

      pos4 = ev.clientY;

      console.log('pos3 = ' + pos3 + ' ,pos4 = ' + pos4);

      } else {

      pos3 = ev.pageX;

      pos4 = ev.pageY;

      console.log('pos3 = ' + pos3 + ', pos4 = ' + pos4);

      }

      //alert('[' + pos3 + ',' + pos4 + ']');

      var wop=0;

      if (window.opener) {

      if (window.opener.document.getElementsByTagName('body')[0]) {

      window.opener.derivethislong(pos3);

      window.opener.derivethislat(pos4);

      wop=window.opener.getzoom();

      } else if (window.parent) {

      if (parent.document.getElementsByTagName('body')[0]) {

      parent.derivethislong(pos3);

      parent.derivethislat(pos4);

      wop=parent.getzoom();

      }

      }

      } else if (window.parent) {

      if (parent.document.getElementsByTagName('body')[0]) {

      parent.derivethislong(pos3);

      parent.derivethislat(pos4);

      wop=parent.getzoom();

      }

      }



      //pos3+=eval(wop * prectis.left);

      //pos4+=eval(wop * prectis.top);

      var xwop='1';




      console.log('prectis.left/top=' + prectis.left + '/' + prectis.top);




      //punto=eval('[' + eval(eval('' + pos3) / eval('' + wop)) + ',' + eval(eval('' + pos4) / eval('' + wop)) + ']');



      punto=eval('[' + eval(eval(-prectis.left * eval('' + wop) + eval('' + pos3)) / eval('' + wop)) + ',' + eval(eval(-prectis.top * eval('' + wop) + eval('' + pos4)) / eval('' + wop)) + ']');



      console.log(punto);

      andqlater();



      });



      //const reset = document.querySelector("#reset");

      //reset.addEventListener("click", () => document.location.reload());



      });



      function dragorig() {

      if (document.getElementById('mg')) {

      document.getElementById('mg').draggable='true';

      } else {

      setTimeout(dragorig, 5000);

      }

      }



      // setTimeout(dragorig, 5000);

… to open Wikipedia Country information webpages of dropped into user drags (on a world map), in ourchanged countries⚫php GeoJson World Countries PHP web application in a new window.

Previous relevant GeoJson World Colour Wheel Wikipedia Integration Tutorial is shown below.

GeoJson World Colour Wheel Wikipedia Integration Tutorial

GeoJson World Colour Wheel Wikipedia Integration Tutorial   🔍

Further to yesterday’s GeoJson World Coastline Quiz Deployments Tutorial, with our two …

… web applications, today we want to deepen the integration with Wikipedia on two fronts …

  • GeoJson World Coastline optional quiz Wikipedia webpage navigation offerings, achieved via a Javascript override initiative …


    const confirm = (cblurb) => {

    if (cblurb.indexOf('Answer was ') != -1 && cblurb.indexOf('. ') != -1) {

    var resp=prompt(cblurb.replace(cblurb.split('Answer was ')[1].split('. ')[0] + '. ', cblurb.split('Answer was ')[1].split('. ')[0] + ' (answer W to see more information on Wikipedia). '), '');

    if (resp != null) {

    if (resp.toLowerCase() == 'w') {

    window.open('//en.wikipedia.org/wiki/' + cblurb.split('Answer was ')[1].split('. ')[0].replace(/\ /g,'_'), '_blank', 'top=70,left=70,width=650,height=650');

    return true;

    }

    return true;

    } else {

    return false;

    }

    }

    return window.confirm(cblurb);

    };
  • GeoJson World Countries and Coastline changed map⚫php Map Chart new onclick menu links to our Colour Wheel web application, and its Wikipedia images and TimeZone information

… in ourchanged regions⚫php GeoJson World Coastlines PHP web application in a new window, or you can also try below.

Previous relevant GeoJson World Coastline Quiz Deployments Tutorial is shown below.

GeoJson World Coastline Quiz Deployments Tutorial

GeoJson World Coastline Quiz Deployments Tutorial   🔍

The deployment follow up to yesterday’s GeoJson World Coastline Function Noun Naming Tutorial seems to concern mobile platform use of the new …

… where heap memory concerns related to the global variables memory used in our GeoJson World Coastlines webpage could cause mobile platform usage reloads of the web application, reminiscent of the external Javascript concerns we had back at GeoJson World Countries SVG Overlay Safari Error Tutorial.

There, as for here, mobile usage got better by swapping global variable usage for HTML content static PHP …

<?php echo ”


<select id=spops style=display:none;>" . $sih . "</select>

<select id=srivs style=display:none;>" . $rih . "</select>


“; ?>

… via …

<?php


$sih='';

$rih='';



function oururlencode($instuff) {

$outstuff='';

$dotbits=explode('.', $instuff);

if (sizeof($dotbits) > 1) {

$outstuff=$instuff;

for ($ii=1; $ii<sizeof($dotbits); $ii++) {

if (strlen( explode(',', explode(' ', $dotbits[$ii])[0])[0] ) > 3) {

$outstuff=str_replace('.' . explode(',', explode(' ', $dotbits[$ii])[0])[0], '.' . substr(explode(',', explode(' ', $dotbits[$ii])[0])[0],0,3), $outstuff);

}

}

return urlencode($outstuff);

}

return urlencode($instuff);

}



if (file_exists('population.geojson')) {

$rbits=explode(']}}', file_get_contents('./population.geojson'));

for ($irr=1; $irr<(-1 + sizeof($rbits)); $irr++) {

$hdrbit=explode('{"type":"Feature', $rbits[-1 + $irr])[-1 + sizeof(explode('{"type":"Feature', $rbits[-1 + $irr]))];

$hbits=explode(',"NAME":"', $hdrbit);

if (sizeof($hbits) > 1) {

if (strpos($sih, ' id=' . str_replace('+','%20',urlencode(explode('"', $hbits[1])[0])) . ' ') === false) {

$sih.='<option id=' . str_replace('+','%20',urlencode(explode('"', $hbits[1])[0])) . ' value=' . str_replace('+','%20', str_replace('[','', str_replace(']','', str_replace('],[',',' ,explode(']}', explode(':[',$hdrbit)[1])[0])))) . '></option>';

}

}

}

}



if (file_exists('rivers.geojson')) {

$rbits=explode(']]}}', file_get_contents('./rivers.geojson'));

for ($irr=1; $irr<(-1 + sizeof($rbits)); $irr++) {

$hdrbit=explode('{"type":"Feature', $rbits[-1 + $irr])[-1 + sizeof(explode('{"type":"Feature', $rbits[-1 + $irr]))];

$hbits=explode(',"name":"', $hdrbit);

if (sizeof($hbits) > 1) {

if (strpos($sih, 'id=river' . str_replace('+','%20',urlencode(explode('"', $hbits[1])[0])) . '>') === false) {

$rih.='<option value=' . str_replace('+','%20', oururlencode(str_replace('[','', str_replace(']','', str_replace('],[', ',', str_replace(']],[[', ' ', explode(']]}', explode(':[[',$hdrbit)[1])[0])))))) . ' id=river' . str_replace('+','%20',urlencode(explode('"', $hbits[1])[0])) . '></option>';

} else {

$rih=str_replace(' id=river' . str_replace('+','%20', oururlencode(explode('"', $hbits[1])[0])) . '>', str_replace('+','%20', urlencode(str_replace('[','', str_replace(']','', str_replace('],[', ',', str_replace(']],[[', ' ', explode(']]}', explode(':[[',$hdrbit)[1])[0])))))) . ' id=river' . str_replace('+','%20',urlencode(explode('"', $hbits[1])[0])) . '>', $rih);

}

}

}

}


?>

… code usage (ie. the HTML file ends up bigger, to help) in ourchanged regions⚫php GeoJson World Coastlines PHP web application in a new window, or you can also try below.

Previous relevant GeoJson World Coastline Function Noun Naming Tutorial is shown below.

GeoJson World Coastline Function Noun Naming Tutorial

GeoJson World Coastline Function Noun Naming Tutorial   🔍

We’re working on an extension to yesterday’s GeoJson World Coastline Rivers Quiz Tutorial‘s Rivers Quiz functionality within our GeoJson World Coastlines web application, and have …

  • settled on an approach … but …
  • not yet finished on deployment issues

… but it is this approach we wanted to talk about today.

Our approach borrows from Object Oriented Programming (OOP) the idea that …

  • just as with OOP thinking class names are like nouns and the methods within that class are like verbs … we, with our approach …
  • help readability of our non-OOP functional code by including those nouns and verbs, as well as ideas like use of plurals to indicate array involvement, with our Javascript function naming

… we can best illustrate to you via showing you new functions and variables and modified code to show you this approach in code …



var rivers='', arivers=[], iguess=-1, isofar=' ', jscore=0, jgoes=0, elema=null, contexta=null, rectisleft=0, rectistop=0, isokto=true;

var populations='', apopulations=[], jguess=-1, jsofar=' ', both=false, jlastn='';

var idone=false;



function populaterivers() {

var found=-1, ifnd=0;

var rbits=rivers.split(']]}}');

var murraytotal=0.0;

rivers='';

var lastn='', hdrbit='', hbits=[];

for (var irr=1; irr<(-1 + rbits.length); irr++) {

hdrbit=rbits[-1 + irr].split('{' + String.fromCharCode(34) + 'type' + String.fromCharCode(34) + ':' + String.fromCharCode(34) + 'Feature')[eval(-1 + rbits[-1 + irr].split('{' + String.fromCharCode(34) + 'type' + String.fromCharCode(34) + ':' + String.fromCharCode(34) + 'Feature').length)] + '';

//alert(hdrbit);

hbits=hdrbit.split(',' + String.fromCharCode(34) + 'name' + String.fromCharCode(34) + ':' + String.fromCharCode(34));

if (hbits.length > 1) {

if ((!navigator.userAgent.match(/Android|BlackBerry|iPhone|iPad|iPod|Opera Mini|IEMobile/i) || eval('' + arivers.length) <= 200)) {

if (lastn != hbits[1].split(String.fromCharCode(34))[0]) {

lastn=hbits[1].split(String.fromCharCode(34))[0];

found=-1;

if (arivers.length > 0) {

for (ifnd=0; ifnd<arivers.length; ifnd++) {

if (('' + arivers[ifnd]).indexOf(':') != -1 && found == -1) {

if (('' + arivers[ifnd]).split(':')[0] == lastn) { found=ifnd; }

}

}

}

if (found >= 0) {

if (lastn == 'Murray') {

console.log(hdrbit.split(':[[')[1].replace(/\]\]\,\[\[/g,' ').replace(/\]\,\[/g,',').replace(/\[/g,'').replace(/\]/g,''));

}

if (!navigator.userAgent.match(/Android|BlackBerry|iPhone|iPad|iPod|Opera Mini|IEMobile/i)) {

arivers[found]+=' ' + lessit(hdrbit.split(':[[')[1].replace(/\]\]\,\[\[/g,' ').replace(/\]\,\[/g,',').replace(/\[/g,'').replace(/\]/g,''));

}

} else {

if (lastn == 'Murray') {

console.log(lastn + ':' + hdrbit.split(':[[')[1].replace(/\]\]\,\[\[/g,' ').replace(/\]\,\[/g,',').replace(/\[/g,'').replace(/\]/g,''));

}

arivers.push(lastn + ':' + lessit(hdrbit.split(':[[')[1].replace(/\]\]\,\[\[/g,' ').replace(/\]\,\[/g,',').replace(/\[/g,'').replace(/\]/g,'')));

}

} else if (1 == 1 || !navigator.userAgent.match(/Android|BlackBerry|iPhone|iPad|iPod|Opera Mini|IEMobile/i)) {

if (lastn == 'Murray') {

console.log(hdrbit.split(':[[')[1].replace(/\]\]\,\[\[/g,' ').replace(/\]\,\[/g,',').replace(/\[/g,'').replace(/\]/g,''));

}

arivers[-1 + arivers.length]+=' ' + lessit(hdrbit.split(':[[')[1].replace(/\]\]\,\[\[/g,' ').replace(/\]\,\[/g,',').replace(/\[/g,'').replace(/\]/g,''));

}

}

}

}

rbits=[];

lastn='';

//if (navigator.userAgent.match(/Android|BlackBerry|iPhone|iPad|iPod|Opera Mini|IEMobile/i)) {

// alert(arivers.length);

//}

//return;

//plotariver(getariver());

if (!idone) { idone=true; getariver(); }

}




function lessit(maybe) {

var altmaybe='', altmaybed='';

if (navigator.userAgent.match(/Android|BlackBerry|iPhone|iPad|iPod|Opera Mini|IEMobile/i)) {

var acsvs=maybe.split(',');

for (var ic=0; ic<acsvs.length; ic++) {

altmaybe+=altmaybed + (acsvs[ic] + '.xyz').substring(0,eval(3 + (acsvs[ic] + '.xyz').indexOf('.'))).split('.xyz')[0];

altmaybed=',';

}

acsvs=[];

return altmaybe;

}

return maybe;

}




function populatepopulations() {

var found=-1, ifnd=0;

var rbits=populations.split(']}}');

populations='';

var jlastn='', hdrbit='', hbits=[];

for (var irr=1; irr<(-1 + rbits.length); irr++) {

hdrbit=rbits[-1 + irr].split('{' + String.fromCharCode(34) + 'type' + String.fromCharCode(34) + ':' + String.fromCharCode(34) + 'Feature')[eval(-1 + rbits[-1 + irr].split('{' + String.fromCharCode(34) + 'type' + String.fromCharCode(34) + ':' + String.fromCharCode(34) + 'Feature').length)] + '';

//alert(hdrbit);

hbits=hdrbit.split(',' + String.fromCharCode(34) + 'NAME' + String.fromCharCode(34) + ':' + String.fromCharCode(34));

if (hbits.length > 1) {

if (jlastn != hbits[1].split(String.fromCharCode(34))[0]) {

jlastn=hbits[1].split(String.fromCharCode(34))[0];

found=-1;

if (apopulations.length > 0) {

for (ifnd=0; ifnd<apopulations.length; ifnd++) {

if (('' + apopulations[ifnd]).indexOf(':') != -1 && found == -1) {

if (('' + apopulations[ifnd]).split(':')[0] == jlastn) { found=ifnd; }

}

}

}

if (found >= 0) {

if (jlastn == 'Sydney') { console.log(hdrbit.split(':[')[1].replace(/\]\,\[/g,',').replace(/\[/g,'').replace(/\]/g,'')); }

apopulations[found]+=' ' + lessit(hdrbit.split(':[')[1].replace(/\]\,\[/g,',').replace(/\[/g,'').replace(/\]/g,''));

} else {

if (jlastn == 'Sydney') { console.log(jlastn + ':' + hdrbit.split(':[')[1].replace(/\]\,\[/g,',').replace(/\[/g,'').replace(/\]/g,'')); }

apopulations.push(jlastn + ':' + lessit(hdrbit.split(':[')[1].replace(/\]\,\[/g,',').replace(/\[/g,'').replace(/\]/g,'')));

}

} else {

if (jlastn == 'Sydney') { console.log(hdrbit.split(':[')[1].replace(/\]\,\[/g,',').replace(/\[/g,'').replace(/\]/g,'')); }

apopulations[-1 + apopulations.length]+=' ' + lessit(hdrbit.split(':[')[1].replace(/\]\,\[/g,',').replace(/\[/g,'').replace(/\]/g,''));

}

}

}

rbits=[];

jlastn='';

//return;

//plotariver(getariver());

}




function getariver() {

//for (var ih=0; ih<arivers.length; ih++) {

// if (arivers[ih].split(':')[0] == 'Murray') { return ih; }

//}

if (!idone) { document.getElementById('ifrivers').src='./rivers.geojson'; } else if (arivers.length > 0) {

iguess=Math.floor(Math.random() * arivers.length);

if (isofar.indexOf(',' + iguess + ',') != -1) {

while (isofar.indexOf(',' + iguess + ',') != -1) {

iguess=Math.floor(Math.random() * arivers.length);

}

}

isofar+=',' + iguess + ',';

lastn=arivers[iguess].split(':')[0];

plotariver(iguess);

setTimeout(askariver, 8000);

return iguess;

}

}




function askariver() {

var another=false;

var midbit='';

var origboth=both;

var thing='river';

if (!both) { midbit='Append spaces to also answer a question regarding the Populations Quiz, or P to just do Populations Quiz.'; } else { thing='population'; }

var retthis=prompt('What is the name of this new blue river plotted on the world map? ' + midbit + ' Enter ? to get given more time looking at (longitude,latitude) = (' + arivers[iguess].split(':')[1].split(',')[0] + ',' + arivers[iguess].split(':')[1].split(',')[1] + ')', '');

if (retthis == null) {

both=false;

jgoes++;

another=confirm('Bad luck. Answer was ' + lastn + '. Score ' + jscore + '/' + jgoes + '. Another go with a new ' + thing + '?');

} else if (retthis.toLowerCase().trim() == 'p') {

both=false;

isokto=true;

getapopulation();

return '';

} else if (retthis.trim() == '?') {

if (retthis.trim() != retthis && !origboth) { both=true; }

setTimeout(askariver, 8000);

return '';

} else if (retthis.trim() == '') {

if (retthis != '' && !origboth) { thing='population'; }

jgoes++;

another=confirm('Bad luck. Answer was ' + lastn + '. Score ' + jscore + '/' + jgoes + '. Another go with a new ' + thing + '?');

if (retthis != '' && !origboth) { isokto=true; both=true; getapopulation(); }

} else if (lastn.toLowerCase().indexOf(retthis.toLowerCase()) != -1 && lastn.toLowerCase() == retthis.toLowerCase() && retthis.trim().length >= 1) {

if (retthis.trim() != retthis && !origboth) { both=true; thing='population'; }

jgoes++;

jscore++;

another=confirm('Will pay that. Answer was ' + lastn + '. Score ' + jscore + '/' + jgoes + '. Another go with a new ' + thing + '?');

} else if (lastn.toLowerCase().indexOf(retthis.toLowerCase()) == -1) {

if (retthis.trim() != retthis && !origboth) { both=true; thing='population'; }

jgoes++;

another=confirm('Bad luck. Answer was ' + lastn + '. Score ' + jscore + '/' + jgoes + '. Another go with a new ' + thing + '?');

} else if (lastn.toLowerCase() == retthis.toLowerCase()) {

if (retthis.trim() != retthis && !origboth) { both=true; thing='population'; }

jgoes++;

jscore++;

another=confirm('Well done! Answer was ' + lastn + '. Score ' + jscore + '/' + jgoes + '. Another go with a new ' + thing + '?');

} else if (retthis.trim().length >= 1) {

if (retthis.trim() != retthis && !origboth) { both=true; thing='population'; }

jgoes++;

another=confirm('Bad luck. Answer was ' + lastn + '. Score ' + jscore + '/' + jgoes + '. Another go with a new ' + thing + '?');

} else {

if (retthis.trim() != retthis && !origboth) { both=true; thing='population'; }

jgoes++;

jscore++;

another=confirm('Will pay that. Answer was ' + lastn + '. Score ' + jscore + '/' + jgoes + '. Another go with a new ' + thing + '?');

}

if (both && !origboth) { isitok=true; getapopulation(); return ''; } else if (both) { return ''; }

if (another) { if (both) { getariver(); getapopulation(); } else { getariver(); } } else { contexta.clearRect(0,0,360,180); }

return '';

}




function plotariver(which) {

if (both) { isokto=true; }

if (isokto) { contexta.clearRect(0,0,360,180); }

if (both) { isokto=false; }

lastn=arivers[which].split(':')[0];

var rest=arivers[which].split(':')[1];

var consolelog='';

console.log(rest);

var restlonglat=[]; //rest.split(',');

var therest=rest.split(' ');

//alert(eval(180.0 + eval('' + restlonglat[0])) + ',' + eval(90.0 - eval('' + restlonglat[1])));

for (var jrrr=0; jrrr<therest.length; jrrr++) {

restlonglat=therest[jrrr].split(',');

for (var irrr=2; irrr<restlonglat.length; irrr+=2) {

if (eval(1 + irrr) < eval('' + restlonglat.length)) {

if (irrr == 2) {

contexta.strokeStyle = '#0000ff';

contexta.lineWidth = 1;

contexta.beginPath();

//console.log('context.moveTo(' + eval(180.0 + eval('' + restlonglat[0])) + ',' + eval(90.0 - eval('' + restlonglat[1])) + ');');

contexta.moveTo(eval(180.0 + eval('' + restlonglat[0])), eval(90.0 - eval('' + restlonglat[1])));

}

//alert(eval(180.0 + eval('' + restlonglat[irrr])) + ',' + eval(90.0 - eval('' + restlonglat[1 + irrr])));

consolelog=('context.lineTo(' + eval(180.0 + eval('' + restlonglat[eval(0 + eval('' + irrr))])) + ',' + eval(90.0 - eval('' + restlonglat[eval(1 + eval('' + irrr))])) + ');');

if (consolelog.indexOf('NaN') == -1) {

contexta.lineTo(eval(180.0 + eval('' + restlonglat[eval(0 + eval('' + irrr))])), eval(90.0 - eval('' + restlonglat[eval(1 + eval('' + irrr))])));

}

//if (eval(irrr + 1) >= eval('' + restlonglat.length)) { context.stroke(); }

}

}

contexta.stroke();

}

}




function getthejson(iois) {

if (iois.src.indexOf('.geojson') != -1) {

var aconto = (iois.contentWindow || iois.contentDocument);

if (aconto != null) {

if (aconto.document) { aconto = aconto.document; }

if (aconto.body != null) {

if (iois.src.indexOf('rivers.geojson') != -1) {

rivers='' + aconto.body.innerHTML;

setTimeout(populaterivers, 500);

iois.src='./population.geojson';

} else if (iois.src.indexOf('population.geojson') != -1) { // && !navigator.userAgent.match(/Android|BlackBerry|iPhone|iPad|iPod|Opera Mini|IEMobile/i)) {

populations='' + aconto.body.innerHTML;

setTimeout(populatepopulations, 500);

}

}

}

}

}



function getapopulation() {

//for (var ih=0; ih<apopulations.length; ih++) {

// if (apopulations[ih].split(':')[0] == 'Murray') { return ih; }

//}

jguess=Math.floor(Math.random() * apopulations.length);

if (jsofar.indexOf(',' + jguess + ',') != -1) {

while (jsofar.indexOf(',' + jguess + ',') != -1) {

jguess=Math.floor(Math.random() * apopulations.length);

}

}

jsofar+=',' + jguess + ',';

jlastn=apopulations[jguess].split(':')[0];

plotapopulation(jguess);

setTimeout(askapopulation, 9000);

return jguess;

}




function askapopulation() {

var another=false;

var origboth=both;

var midbit='';

var thing='population';

if (!both) { midbit='Append spaces to also answer a question regarding the Rivers Quiz, or R to just do Rivers Quiz.'; } else { thing='river'; }

var retthis=prompt('What is the name of this new red population area plotted on the world map? ' + midbit + ' Enter ? to get given more time looking at (longitude,latitude) = (' + apopulations[jguess].split(':')[1].split(',')[0] + ',' + apopulations[jguess].split(':')[1].split(',')[1] + ')', '');

if (retthis == null) {

both=false;

jgoes++;

another=confirm('Bad luck. Answer was ' + jlastn + '. Score ' + jscore + '/' + jgoes + '. Another go with a new ' + thing + '?');

} else if (retthis.toLowerCase().trim() == 'r') {

both=false;

isokto=true;

getariver();

return '';

} else if (retthis.trim() == '?') {

if (retthis.trim() != retthis && !origboth) { both=true; }

setTimeout(askapopulation, 9000);

return '';

} else if (retthis.trim() == '') {

if (retthis != '' && !origboth) { thing='river'; }

jgoes++;

another=confirm('Bad luck. Answer was ' + jlastn + '. Score ' + jscore + '/' + jgoes + '. Another go with a new ' + thing + '?');

if (retthis != '' && !origboth) { isokto=true; both=true; getariver(); }

} else if (jlastn.toLowerCase().indexOf(retthis.toLowerCase()) != -1 && jlastn.toLowerCase() == retthis.toLowerCase() && retthis.trim().length >= 1) {

if (retthis.trim() != retthis && !origboth) { both=true; thing='river'; }

jgoes++;

jscore++;

another=confirm('Will pay that. Answer was ' + jlastn + '. Score ' + jscore + '/' + jgoes + '. Another go with a new ' + thing + '?');

} else if (jlastn.toLowerCase().indexOf(retthis.toLowerCase()) == -1) {

if (retthis.trim() != retthis && !origboth) { both=true; thing='river'; }

jgoes++;

another=confirm('Bad luck. Answer was ' + jlastn + '. Score ' + jscore + '/' + jgoes + '. Another go with a new ' + thing + '?');

} else if (jlastn.toLowerCase() == retthis.toLowerCase()) {

if (retthis.trim() != retthis && !origboth) { both=true; thing='river'; }

jgoes++;

jscore++;

another=confirm('Well done! Answer was ' + jlastn + '. Score ' + jscore + '/' + jgoes + '. Another go with a new ' + thing + '?');

} else if (retthis.trim().length >= 1) {

if (retthis.trim() != retthis && !origboth) { both=true; thing='river'; }

jgoes++;

another=confirm('Bad luck. Answer was ' + jlastn + '. Score ' + jscore + '/' + jgoes + '. Another go with a new ' + thing + '?');

} else {

if (retthis.trim() != retthis && !origboth) { both=true; thing='river'; }

jgoes++;

jscore++;

another=confirm('Will pay that. Answer was ' + jlastn + '. Score ' + jscore + '/' + jgoes + '. Another go with a new ' + thing + '?');

}

if (both) { contexta.clearRect(0,0,360,180); }

if (both && !origboth) { isitok=true; getariver(); return ''; }

if (another) { if (both) { getariver(); getapopulation(); } else { getapopulation(); } } else { contexta.clearRect(0,0,360,180); }

return '';

}




function plotapopulation(which) {

if (isokto) { contexta.clearRect(0,0,360,180); }

//if (both) { isokto=true; }

jlastn=apopulations[which].split(':')[0];

var rest=apopulations[which].split(':')[1];

var restlonglat=[]; //rest.split(',');

restlonglat=rest.split(',');

if (eval('' + restlonglat.length) >= 2) {

contexta.fillStyle = 'red';

contexta.fillRect(eval(180.0 + eval('' + restlonglat[0])), eval(90.0 - eval('' + restlonglat[1])),1,1);

contexta.fill();

}

}

… in ourchanged regions⚫php GeoJson World Coastlines PHP web application in a new window, or you can also try below.

Previous relevant GeoJson World Coastline Rivers Quiz Tutorial is shown below.

GeoJson World Coastline Rivers Quiz Tutorial

GeoJson World Coastline Rivers Quiz Tutorial   🔍

It’s time to turn our attention away from GeoJson World Countries, as talked about with yesterday’s GeoJson World Countries Plotted Ports Tutorial, and back to GeoJson World Coastline ideas. Why? We want to add a …



Rivers Quiz

… via the (generously provided) HTTP://geojson.xyz rivers lake centerlines GeoJSON data we download and then uploaded to become rivers.geojson data file. Now we were wondering out of …

  • use the URL to this GeoJSON file as the “src” attribute of an HTML iframe …


    <iframe id=ifrivers onload=getthejson(this); style=display:none; src=./rivers.geojson></iframe>


    … element (and then access the content via the onload event …


    var rivers='', arivers=[], iguess=-1, isofar=' ', jscore=0, jgoes=0, elema=null, contexta=null, rectisleft=0, rectistop=0;



    function getthejson(iois) {

    var aconto = (iois.contentWindow || iois.contentDocument);

    if (aconto != null) {

    if (aconto.document) { aconto = aconto.document; }

    if (aconto.body != null) {

    rivers='' + aconto.body.innerHTML;

    setTimeout(populaterivers, 500);

    }

    }

    }


    … function) would suffice, or if we would end up using …
  • Ajax call

… to access this data, and were a bit surprised the former method was all fine. Of course there are snazzy inbuilt Javascript hierarchical calls you can make to process the data, but we find, with GeoJSON data, in the client realm (where we’re keen to stay with today’s work (though PHP serverside can, of course, be purloined to do all this work, should you have that available)), of Javascript, we just need very basic string functions …

  • split (versus PHP explode)
  • index (versus PHP strpos)
  • substring (versus PHP substr)
  • replace (versus PHP str_replace)
  • push (versus PHP array_push)

… to get by processing …



var rivers='', arivers=[], iguess=-1, isofar=' ', jscore=0, jgoes=0, elema=null, contexta=null, rectisleft=0, rectistop=0;



function populaterivers() {

var found=-1, ifnd=0;

var rbits=rivers.split(']]}}');

var lastn='', hdrbit='', hbits=[];

for (var irr=1; irr<(-1 + rbits.length); irr++) {

hdrbit=rbits[-1 + irr].split('{' + String.fromCharCode(34) + 'type' + String.fromCharCode(34) + ':' + String.fromCharCode(34) + 'Feature')[eval(-1 + rbits[-1 + irr].split('{' + String.fromCharCode(34) + 'type' + String.fromCharCode(34) + ':' + String.fromCharCode(34) + 'Feature').length)] + '';

hbits=hdrbit.split(',' + String.fromCharCode(34) + 'name' + String.fromCharCode(34) + ':' + String.fromCharCode(34));

if (hbits.length > 1) {

if (lastn != hbits[1].split(String.fromCharCode(34))[0]) {

lastn=hbits[1].split(String.fromCharCode(34))[0];

found=-1;

if (arivers.length > 0) {

for (ifnd=0; ifnd<arivers.length; ifnd++) {

if (('' + arivers[ifnd]).indexOf(':') != -1 && found == -1) {

if (('' + arivers[ifnd]).split(':')[0] == lastn) { found=ifnd; }

}

}

}

if (found >= 0) {

//if (lastn == 'Murray') { console.log(hdrbit.split(':[[')[1].replace(/\]\]\,\[\[/g,' ').replace(/\]\,\[/g,',').replace(/\[/g,'').replace(/\]/g,'')); }

arivers[found]+=' ' + hdrbit.split(':[[')[1].replace(/\]\]\,\[\[/g,' ').replace(/\]\,\[/g,',').replace(/\[/g,'').replace(/\]/g,'');

} else {

//if (lastn == 'Murray') { console.log(lastn + ':' + hdrbit.split(':[[')[1].replace(/\]\]\,\[\[/g,' ').replace(/\]\,\[/g,',').replace(/\[/g,'').replace(/\]/g,'')); }

arivers.push(lastn + ':' + hdrbit.split(':[[')[1].replace(/\]\]\,\[\[/g,' ').replace(/\]\,\[/g,',').replace(/\[/g,'').replace(/\]/g,''));

}

} else {

//if (lastn == 'Murray') { console.log(hdrbit.split(':[[')[1].replace(/\]\]\,\[\[/g,' ').replace(/\]\,\[/g,',').replace(/\[/g,'').replace(/\]/g,'')); }

arivers[-1 + arivers.length]+=' ' + hdrbit.split(':[[')[1].replace(/\]\]\,\[\[/g,' ').replace(/\]\,\[/g,',').replace(/\[/g,'').replace(/\]/g,'');

}

}

}

lastn='';

}

… the (ever so) consistent GeoJSON data!

The progress with GeoJson World Countries helped too. We knew to add another HTML canvas layer as per …

  • document.body (now with the new onmousemove=airportplot(event); event logic) lowest level …
  • overlayed by HTML canvas element plotted with world country linework … now including …
  • overlayed by HTML canvas element dedicated to nearest airport plotting …


    <canvas id=myacanvas height='180' width='360' style='background-color:transparent;z-index:55;display:inline-block;position:absolute;top:0px;left:0px;'></canvas>
  • overlayed by HTML img (transparent image) element and its associated image map area elements … and today we add into the mix …
  • HTML div hosting SVG elements overlaying initialized with “land” parts green infilled SVG at a mid range z-index (only as well as when called upon) individual GeoJson entities overlay

… and to, at document.body onload logic …



// ... and extended document.body onload event logic has added, up near its top ...

elema = document.getElementById('myacanvas');

contexta = elema.getContext('2d');

… and supplement with another HTML sub “emoji button” ❓ ( &#10067; ) type element …



<sub style=cursor:pointer; onclick=getariver(); title='River Quiz'>&#10067;</sub>

… allowing for …



function getariver() {

//for (var ih=0; ih<arivers.length; ih++) {

// if (arivers[ih].split(':')[0] == 'Murray') { return ih; }

//}

iguess=Math.floor(Math.random() * arivers.length);

if (isofar.indexOf(',' + iguess + ',') != -1) {

while (isofar.indexOf(',' + iguess + ',') != -1) {

iguess=Math.floor(Math.random() * arivers.length);

}

}

isofar+=',' + iguess + ',';

lastn=arivers[iguess].split(':')[0];

plotariver(iguess);

setTimeout(askariver, 8000);

return iguess;

}



function askariver() {

var another=false;

var retthis=prompt('What is the name of this new blue river plotted on the world map? Enter ? to get given more time looking at (longitude,latitude) = (' + arivers[iguess].split(':')[1].split(',')[0] + ',' + arivers[iguess].split(':')[1].split(',')[1] + ')', '');

if (retthis == null) {

jgoes++;

another=confirm('Bad luck. Answer was ' + lastn + '. Score ' + jscore + '/' + jgoes + '. Another go with a new river?');

} else if (retthis.trim() == '?') {

setTimeout(askariver, 8000);

return '';

} else if (retthis.trim() == '') {

jgoes++;

another=confirm('Bad luck. Answer was ' + lastn + '. Score ' + jscore + '/' + jgoes + '. Another go with a new river?');

} else if (lastn.toLowerCase().indexOf(retthis.toLowerCase()) == -1) {

jgoes++;

another=confirm('Bad luck. Answer was ' + lastn + '. Score ' + jscore + '/' + jgoes + '. Another go with a new river?');

} else if (lastn.toLowerCase() == retthis.toLowerCase()) {

jgoes++;

jscore++;

another=confirm('Well done! Answer was ' + lastn + '. Score ' + jscore + '/' + jgoes + '. Another go with a new river?');

} else if (retthis.trim().length >= 1) {

jgoes++;

another=confirm('Bad luck. Answer was ' + lastn + '. Score ' + jscore + '/' + jgoes + '. Another go with a new river?');

} else {

jgoes++;

jscore++;

another=confirm('Will pay that. Answer was ' + lastn + '. Score ' + jscore + '/' + jgoes + '. Another go with a new river?');

}

if (another) { getariver(); } else { contexta.clearRect(0,0,360,180); }

return '';

}



function plotariver(which) {

contexta.clearRect(0,0,360,180);

lastn=arivers[which].split(':')[0];

var rest=arivers[which].split(':')[1];

console.log(rest);

var restlonglat=[]; //rest.split(',');

var therest=rest.split(' ');

//alert(eval(180.0 + eval('' + restlonglat[0])) + ',' + eval(90.0 - eval('' + restlonglat[1])));

for (var jrrr=0; jrrr<therest.length; jrrr++) {

restlonglat=therest[jrrr].split(',');

for (var irrr=2; irrr<restlonglat.length; irrr+=2) {

if (irrr == 2) {

contexta.strokeStyle = '#0000ff';

contexta.lineWidth = 1;

contexta.beginPath();

console.log('context.moveTo(' + eval(180.0 + eval('' + restlonglat[0])) + ',' + eval(90.0 - eval('' + restlonglat[1])) + ');');

contexta.moveTo(eval(180.0 + eval('' + restlonglat[0])), eval(90.0 - eval('' + restlonglat[1])));

}

//alert(eval(180.0 + eval('' + restlonglat[irrr])) + ',' + eval(90.0 - eval('' + restlonglat[1 + irrr])));

console.log('context.lineTo(' + eval(180.0 + eval('' + restlonglat[eval(0 + eval('' + irrr))])) + ',' + eval(90.0 - eval('' + restlonglat[eval(1 + eval('' + irrr))])) + ');');

contexta.lineTo(eval(180.0 + eval('' + restlonglat[eval(0 + eval('' + irrr))])), eval(90.0 - eval('' + restlonglat[eval(1 + eval('' + irrr))])));

//if (eval(irrr + 1) >= eval('' + restlonglat.length)) { context.stroke(); }

}

contexta.stroke();

}

}

… to work the Rivers Quiz. Finally, though, for all good practicalities we also need those zoom logics out of GeoJson World Countries logic, via “emoji button” 🔎 ( &#128270; ) …



<a style=cursor:pointer; title='Zoom In' onclick='event.stopPropagation(); event.preventDefault(); zoomin();'>&#128270;</a>

… calling on meta name=viewport tag for mobile …



<meta id='myviewport' name='viewport' content='width=device-width, initial-scale=1, minimum-scale=0.1, maximum-scale=8, user-scalable=yes' >

… as well as the zooming Javascript …



var jzoom=1.0, izoom=location.search.split('zoom=')[1] ? eval(decodeURIComponent(location.search.split('zoom=')[1].split('&')[0])) : 1.0;



function zoomin() {

if (navigator.userAgent.match(/Android|BlackBerry|iPhone|iPad|iPod|Opera Mini|IEMobile/i)) {

jzoom*=2;

document.getElementById('myviewport').setAttribute('content', 'width=device-width, initial-scale=' + eval(jzoom * izoom) + ', minimum-scale=0.1, maximum-scale=8, user-scalable=yes');

window.scrollTo(0,0); //izoom*=2;

} else {

//if (1 == 1) {

// alert('Please use your web browser View Menu options Zoom In or Zoom Out');

//} else {

document.body.style.zoom=('' + eval(izoom * 200.0) + '%');

izoom*=2;

//location.href=document.URL.split('?')[0].split('#')[0] + '?zoom=' + encodeURIComponent('' + eval(2 * izoom));

//}

}

}

So feel free to try the new Rivers Quiz in ourchanged regions⚫php GeoJson World Coastlines PHP web application in a new window, or you can also try below.

Previous relevant GeoJson World Countries Plotted Ports Tutorial is shown below.

GeoJson World Countries Plotted Ports Tutorial

GeoJson World Countries Plotted Ports Tutorial   🔍

There are a few interesting aspects to today’s extension of functionality onto yesterday’s GeoJson World Countries Plotted Airports Tutorial‘s GeoJson World Countries web application …

  • where to modularise … we think “data collection” commonality is a good reason, and so we makethese changes to intair⚫php
  • making an (“animated emoji”) button dual purpose on top of originally being a single purpose button …


    <sub title='Show Nearby Airports' onclick='doair=how(true,this); twothousand*=2; this.title=this.title.substring(0,4) + String.fromCharCode(105) + String.fromCharCode(110) + String.fromCharCode(103) + this.title.replace(this.title.split(String.fromCharCode(32))[0] + String.fromCharCode(32), String.fromCharCode(32));' data-type=9992 style=cursor:pointer; id=portsub>&#9992;</sub>


    … working with the intairsuffix global variable that could add a new GET argument where both the “port” label in &port=[value] and that [value] can affect behaviour from the intair.php PHP helper tool above …


    var intairsuffix='', zhra=null, zhrb=null, kklat=0, kklong=0, doair=false, vsll=[-999.0], answered=true;



    function how(atr, isub) {

    var curgd=isub.getAttribute('data-type');

    if (('' + curgd) == '9992') { // airport

    if (intairsuffix != '') {

    intairsuffix='&port=air';

    isub.title='Showing Nearby Airports and Ports';

    document.getElementById('title').value='Nearby Timezone Places and Airports and Ports';

    }

    } else if (('' + curgd) == '128674') { // port

    if (intairsuffix == '') {

    if (doair) {

    intairsuffix='&port=air';

    isub.title='Showing Nearby Airports and Ports';

    document.getElementById('title').value='Nearby Timezone Places and Airports and Ports';

    } else {

    intairsuffix='&port=y';

    isub.title='Showing Nearby Ports';

    document.getElementById('title').value='Nearby Timezone Places and Ports';

    }

    }

    }

    return true;

    }



    function feedhow() {

    var isub=document.getElementById('portsub');

    var curgd=isub.getAttribute('data-type');

    if (('' + curgd) == '9992') { // airport

    isub.innerHTML='&#128674;';

    isub.setAttribute('data-type', '128674');

    } else if (('' + curgd) == '128674') { // port

    isub.innerHTML='&#9992;';

    isub.setAttribute('data-type', '9992');

    }

    }
  • Ajax asynchronous usage for second half of a synchronous previous usage …


    var intairsuffix='', zhra=null, zhrb=null, kklat=0, kklong=0, doair=false, vsll=[-999.0], answered=true;



    function stateChangedb() {

    if (zhrb.readyState == 4) {

    if (zhrb.status == 200) {

    var rectis=document.body.getBoundingClientRect();

    var topllong=-180.0;

    var topllat=90.0;

    var onepixelequals=izoom;

    var bts=zhrb.response.split('.src + ' + String.fromCharCode(39));

    if (eval('' + bts.length) > 1) {

    for (var ijh=1; ijh<bts.length; ijh++) {

    var vs=eval(eval(eval(eval(-topllong + eval(bts[ijh].split(String.fromCharCode(39))[0].split('[')[1].split(',')[1])) * onepixelequals) + eval(0 * eval(rectis.left))) +

    eval(eval(eval(topllat - eval(bts[ijh].split(String.fromCharCode(39))[0].split('[')[1].split(',')[0])) * onepixelequals) + eval(0 * eval(rectis.top))));

    if (!inarray(vs,vsll)) {

    vsll.push(vs);

    drawaac(

    eval(eval(eval(-topllong + eval(bts[ijh].split(String.fromCharCode(39))[0].split('[')[1].split(',')[1])) * onepixelequals) + eval(0 * eval(rectis.left))),

    eval(eval(eval(topllat - eval(bts[ijh].split(String.fromCharCode(39))[0].split('[')[1].split(',')[0])) * onepixelequals) + eval(0 * eval(rectis.top)))

    );

    }

    }

    }

    }

    }

    }



    function stateChangeda() {

    if (zhra.readyState == 4) {

    if (zhra.status == 200) {

    var rectis=document.body.getBoundingClientRect();

    var topllong=-180.0;

    var topllat=90.0;

    var onepixelequals=izoom;

    var bts=zhra.response.split('.src + ' + String.fromCharCode(39));

    if (eval('' + bts.length) > 1) {

    for (var ijh=1; ijh<bts.length; ijh++) {

    var vs=eval(eval(eval(eval(-topllong + eval(bts[ijh].split(String.fromCharCode(39))[0].split('[')[1].split(',')[1])) * onepixelequals) + eval(0 * eval(rectis.left))) +

    eval(eval(eval(topllat - eval(bts[ijh].split(String.fromCharCode(39))[0].split('[')[1].split(',')[0])) * onepixelequals) + eval(0 * eval(rectis.top))));

    if (!inarray(vs,vsll)) {

    vsll.push(vs);

    drawaac(

    eval(eval(eval(-topllong + eval(bts[ijh].split(String.fromCharCode(39))[0].split('[')[1].split(',')[1])) * onepixelequals) + eval(0 * eval(rectis.left))),

    eval(eval(eval(topllat - eval(bts[ijh].split(String.fromCharCode(39))[0].split('[')[1].split(',')[0])) * onepixelequals) + eval(0 * eval(rectis.top)))

    );

    }

    }

    }

    if (intairsuffix.indexOf('&port=air') != -1) {

    zhrb = new XMLHttpRequest();

    zhrb.onreadystatechange=stateChangedb;

    zhrb.open('get', '/HTMLCSS/intair.php?num=6&lat=' + kklat + '&long=' + kklong + '&port=y', true);

    zhrb.send(null);

    }

    answered=true;

    }

    }

    }



    function naira(klat, klong) {

    if (answered && doair) {

    answered=false;

    zhra = new XMLHttpRequest();

    zhra.onreadystatechange=stateChangeda;

    console.log('/HTMLCSS/intair.php?num=6&lat=' + klat + '&long=' + klong + intairsuffix);

    if (intairsuffix.indexOf('&port=air') != -1) {

    kklat=klat;

    kklong=klong;

    zhra.open('get', '/HTMLCSS/intair.php?num=6&lat=' + klat + '&long=' + klong, true);

    } else {

    zhra.open('get', '/HTMLCSS/intair.php?num=6&lat=' + klat + '&long=' + klong + intairsuffix, true);

    }

    zhra.send(null);

    }

    }


    … keeps a fastish synchronous call (that we enforce via that answered global variable) but truely invokes an asynchronous arrangement extracting Nearby Ports data to plot, as applicable

… in adding …

So far, with yesterday’s GeoJson World Countries Google Directions Trip Tutorial‘s GeoJson World Countries points of interest include …

… in ourchanged countries⚫php web✂application you can also try below.

Previous relevant GeoJson World Countries Plotted Airports Tutorial is shown below.

GeoJson World Countries Plotted Airports Tutorial

GeoJson World Countries Plotted Airports Tutorial   🔍

Introducing the Map Chart recognition of nearby Airports with yesterday’s GeoJson World Countries Nearest Airports Tutorial‘s progress on our latest GeoJson World Countries PHP web application, it set us to seeing …

  • the combination of Google Directions‘s talents allowing you to reposition on the fly … and …
  • the onmousemove event, at least for our non-mobile users

… could mean that if we pre-plot airports on the world map, given that the user has clicked the ✈ ( &#9992; ) “Show an Interest in Airports” emoji button, as a non-mobile user hovers over the world map, this pre-plotting might help trip planners with their travel options, should air travel be part of their interest, in the same way it is an option up at Google Directions in ourchanged countries⚫php web✂application you can also try below. The overlay scenario now reads …

  • document.body (now with the new onmousemove=airportplot(event); event logic) lowest level …
  • overlayed by HTML canvas element plotted with world country linework … now including …
  • overlayed by HTML canvas element dedicated to nearest airport plotting …


    <canvas id=myacanvas height='180' width='360' style='background-color:transparent;z-index:55;display:inline-block;position:absolute;top:0px;left:0px;'></canvas>
  • overlayed by HTML img (transparent image) element and its associated image map area elements … and today we add into the mix …
  • HTML div hosting SVG elements overlaying initialized with “land” parts green infilled SVG at a mid range z-index (only as well as when called upon) individual GeoJson entities overlay

… worked by new (sometimes Ajax) Javascript code …



var zhra=null, elema=null, contexta=null, answered=true, vsll=[-999.0], doair=false; // clicking ✈ sets doair=true;



function drawaac(centerX, centerY) {

contexta.beginPath();

contexta.globalAlpha = 0.9;

if (1 == 1) {

contexta.fillStyle = 'black';

contexta.fillRect(centerX / izoom, centerY / izoom,1,1);

contexta.fill();

} else {

contexta.arc(centerX / izoom, centerY / izoom, 1, 0, 2 * Math.PI, false);

contexta.fillStyle = 'black';

contexta.fill();

contexta.lineWidth = 5;

contexta.lineWidth = 0.00001;

contexta.strokeStyle = '#003300';

contexta.stroke();

}

return true;

}



function inarray(needle, haystack) { // thanks to https://stackoverflow.com/questions/784012/javascript-equivalent-of-phps-in-array

var length = haystack.length;

for (var i = 0; i < length; i++) {

if (haystack[i] == needle) return true;

}

return false;

}



function stateChangeda() {

if (zhra.readyState == 4) {

if (zhra.status == 200) {

var rectis=document.body.getBoundingClientRect();

var topllong=-180.0;

var topllat=90.0;

var onepixelequals=izoom;

var bts=zhra.response.split('.src + ' + String.fromCharCode(39));

if (eval('' + bts.length) > 1) {

for (var ijh=1; ijh<bts.length; ijh++) {

var vs=eval(eval(eval(eval(-topllong + eval(bts[ijh].split(String.fromCharCode(39))[0].split('[')[1].split(',')[1])) * onepixelequals) + eval(0 * eval(rectis.left))) +

eval(eval(eval(topllat - eval(bts[ijh].split(String.fromCharCode(39))[0].split('[')[1].split(',')[0])) * onepixelequals) + eval(0 * eval(rectis.top))));

if (!inarray(vs,vsll)) {

vsll.push(vs);

drawaac(

eval(eval(eval(-topllong + eval(bts[ijh].split(String.fromCharCode(39))[0].split('[')[1].split(',')[1])) * onepixelequals) + eval(0 * eval(rectis.left))),

eval(eval(eval(topllat - eval(bts[ijh].split(String.fromCharCode(39))[0].split('[')[1].split(',')[0])) * onepixelequals) + eval(0 * eval(rectis.top)))

);

}

}

}

answered=true;

}

}

}



function naira(klat, klong) {

if (answered && doair) {

answered=false;

zhra = new XMLHttpRequest();

zhra.onreadystatechange=stateChangeda;

zhra.open('get', '/HTMLCSS/intair.php?num=6&lat=' + klat + '&long=' + klong, true);

zhra.send(null);

}

}



function airportplot(e) {

if (answered) {

var rectis=null; //document.body.getBoundingClientRect();

var blat=0, blong=0;

var topllong=-180.0;

var topllat=90.0;

onepixelequals=eval(0.0 + eval(1.0 * izoom));

e = e || window.event;

e.preventDefault();

if (e.touches) {

if (e.touches[0].pageX) {

naira(eval(-rectisleft + e.touches[0].pageX), eval(-rectistop + e.touches[0].pageY)); //if (drawac(eval(-rectisleft + e.touches[0].pageX), eval(-rectistop + e.touches[0].pageY))) e = e; }

} else {

rectis=document.body.getBoundingClientRect();

naira(eval(-rectis.left + e.touches[0].clientX), eval(-rectis.top + e.touches[0].clientY)); //if (drawac(eval(-rectis.left + e.touches[0].clientX), eval(-rectis.top + e.touches[0].clientY))) { e = e; }

}

} else if (e.pageX || e.pageY) {

blat=eval(eval(eval(topllat * onepixelequals - eval(-rectistop + e.pageY) * 1)) / onepixelequals);

blong=eval(eval(eval(topllong * onepixelequals + eval(-rectisleft + e.pageX) * 1)) / onepixelequals);

if ((blat >= -90.0 && blat <= 90.0) && (blong >= -180.0 && blong <= 180.0)) {

naira(blat, blong); //if (drawac(eval(-rectisleft + e.pageX), eval(-rectistop + e.pageY))) { e = e; }

}

} else {

rectis=document.body.getBoundingClientRect();

naira(eval(-rectis.left + e.clientX), eval(-rectis.top + e.clientY)); //if (drawac(eval(-rectis.left + e.clientX), eval(-rectis.top + e.clientY))) { e = e; }

}

}

}



// ... and extended document.body onload event logic has added, up near its top ...

elema = document.getElementById('myacanvas');

contexta = elema.getContext('2d');

Previous relevant GeoJson World Countries Nearest Airports Tutorial is shown below.

GeoJson World Countries Nearest Airports Tutorial

GeoJson World Countries Nearest Airports Tutorial   🔍

So far, with yesterday’s GeoJson World Countries Google Directions Trip Tutorial‘s GeoJson World Countries points of interest include …

… being as we’re into trip planning now!



var airportstuff='', doair=false, zhr=null;



function stateChanged() {

if (zhr.readyState == 4) {

if (zhr.status == 200) {

var bts=zhr.response.split('.src + ' + String.fromCharCode(39));

if (eval('' + bts.length) > 1) {

for (var ijh=1; ijh
function windowopen(p1, p2, p3) {

if (p1.length > 800) {

document.getElementById('iddata').value=(p1.split('&data=')[1].split('&')[0].split('#')[0]).replace(/\&20\;/g,' ');

document.getElementById('smapif').click();

return null;

}

return window.open(p1, p2, p3);

}



function apm(mu) {

if (airportstuff != '' && doair) {

return (mu + airportstuff).replace('&', encodeURIComponent(' and Airports') + '&');

}

return mu;

}



function nair(klat, klong) {

airportstuff='';

zhr = new XMLHttpRequest();

zhr.onreadystatechange=stateChanged;

zhr.open('get', '/HTMLCSS/intair.php?num=4&lat=' + klat + '&long=' + klong, true);

zhr.send(null);

}



function alats(inlat) {

if (inlat == 0 && lastlats.length == 0) { inlat=inlat; } else { lastlats.push(inlat); }

return inlat;

}



function alongs(inlong) {

if (inlong == 0 && lastlongs.length == 0) { inlong=inlong; } else { lastlongs.push(inlong); }

setTimeout(prenair, 200); //nair(thislat, inlong);

return inlong;

}



function prenair() {

nair(thislat, thislong);

}

… featuring Ajax Javascript code.

Try this out with ourchanged countries⚫php web✂application you can also try below.

Previous relevant GeoJson World Countries Google Directions Trip Tutorial is shown below.

GeoJson World Countries Google Directions Trip Tutorial

GeoJson World Countries Google Directions Trip Tutorial   🔍

Adding to the “zoom” progress of yesterday’s GeoJson World Countries Zoom Tutorial, today, we wanted to …

  • add interfacing functionality to the excellent Google Directions part of Google Maps, perhaps to help with Trip planning, or even just to associate a Placename with a latitude and longitude as clicked by the user, via the very simple URL arrangement …
    https://www.google.com/maps/dir/[decimalLatitudeDegrees]/[decimalLongitudeDegrees]
    … helped out by new Javascript functions …


    var lastlats=[], lastlongs=[], lastlat=-99.0, lastlong=-99.0, thislat=0.0, thislong=0.0;



    function preface(inblurb) {

    var extras='';

    var outblurb=inblurb;

    if (Math.abs(eval('' + lastlat)) > 0.0 || Math.abs(eval('' + lastlong)) > 0.0) {

    if (Math.abs(eval('' + lastlat)) <= 90.0 && Math.abs(eval('' + lastlong)) <= 180.0) {
    extras=' Add G for Google Directions between (' + lastlat + ',' + lastlong + ') to (' + thislat + ',' + thislong + ') and spaces (also more trip legs) to hashtag navigate to Google Charts later. ';
    }
    }
    return extras + outblurb;
    }


    function alats(inlat) {

    if (inlat == 0 && lastlats.length == 0) { inlat=inlat; } else { lastlats.push(inlat); }

    return inlat;

    }



    function alongs(inlong) {

    if (inlong == 0 && lastlongs.length == 0) { inlong=inlong; } else { lastlongs.push(inlong); }

    return inlong;

    }


    … and …
  • add some hashtag navigation (fairly self explanatory emoji button ⬆ ⬇ ↗) ideas now that our GeoJson world map can be zoomed in on

… in ourchanged countries⚫php web✂application you can also try below.

Previous relevant GeoJson World Countries Zoom Tutorial is shown below.

GeoJson World Countries Zoom Tutorial

GeoJson World Countries Zoom Tutorial   🔍

Onto yesterday’s GeoJson World Countries TimeZone Times Tutorial GeoJson World Countries web application’s capabilities we want to add zooming, that doesn’t rely on web browser functionality (which continues to work). With that in mind we create a new emoji ( &#128270; ) 🔎 link, with this onclick event code …



var jzoom=1.0, izoom=location.search.split('zoom=')[1] ? eval(decodeURIComponent(location.search.split('zoom=')[1].split('&')[0])) : 1.0;



function zoomin() {

if (navigator.userAgent.match(/Android|BlackBerry|iPhone|iPad|iPod|Opera Mini|IEMobile/i)) {

jzoom*=2;

document.getElementById('myviewport').setAttribute('content', 'width=device-width, initial-scale=' + eval(jzoom * izoom) + ', minimum-scale=0.1, maximum-scale=8, user-scalable=yes');

window.scrollTo(0,0);

} else {

document.body.style.zoom=('' + eval(izoom * 200.0) + '%');

izoom*=2;

}

}

… to multiply the webpage zoom factor in a programmatical way. To acheive this, we have a two way approach (as you might have surmised from above) …

  • for mobile, the logic is easier by introducing a new meta name=viewport …


    <meta id="myviewport" name="viewport" content="width=device-width, initial-scale=1, minimum-scale=0.1, maximum-scale=8, user-scalable=yes" >


    … tag … while …
  • for non-mobile we needed to realize that event.pageX and event.pageY co-ordinates grow in proportion to the zoom factor, and that better latitude and longitude determining lines of code would go …


    function canvasclick(e) {

    var rectis=document.body.getBoundingClientRect();

    var topllong=-180.0;

    var topllat=90.0;

    onepixelequals=eval(0.0 + eval(1.0 * izoom));

    //document.title='canvasclick';

    e = e || window.event;

    e.preventDefault();

    if (e.touches) {

    if (e.touches[0].pageX) {

    //lastl='Longitude,Latitude coordinates are ' + eval(topllong + eval(-rectis.left + e.touches[0].pageX) * onepixelequals) + ',' + eval(topllat - eval(-rectis.top + e.touches[0].pageY) * onepixelequals);

    if (drawc(eval(-rectisleft + e.touches[0].pageX), eval(-rectistop + e.touches[0].pageY))) {

    thislat=eval(topllat - eval(-rectistop + e.touches[0].pageY) * onepixelequals);

    thislong=eval(topllong + eval(-rectisleft + e.touches[0].pageX) * onepixelequals);

    //console.log('rectistop=' + rectistop + ' and rectisleft=' + rectisleft + ' and rectisy=' + rectisy + ' and thislat=' + thislat);

    document.getElementById('nearestif').src='/PHP/tz_places.php?place=&latitude=' + encodeURIComponent('' + eval(topllat - eval(-rectistop + e.touches[0].pageY) * onepixelequals)) + '&longitude=' + encodeURIComponent('' + eval(topllong + eval(-rectisleft + e.touches[0].pageX) * onepixelequals)) + '&ntztontz=y';

    }

    } else {



    //lastl='Longitude,Latitude coordinates are ' + eval(topllong + eval(-rectis.left + e.touches[0].clientX) * onepixelequals) + ',' + eval(topllat - eval(-rectis.top + e.touches[0].clientY) * onepixelequals);

    if (drawc(eval(-rectis.left + e.touches[0].clientX), eval(-rectis.top + e.touches[0].clientY))) {

    thislat=eval(topllat - eval(-rectis.top + e.touches[0].clientY) * onepixelequals);

    thislong=eval(topllong + eval(-rectis.left + e.touches[0].clientX) * onepixelequals);

    //console.log('rectis.top=' + rectis.top + ' and rectis.left=' + rectis.left + ' and rectis.y=' + rectis.y + ' anD thislat=' + thislat);

    document.getElementById('nearestif').src='/PHP/tz_places.php?place=&latitude=' + encodeURIComponent('' + eval(topllat - eval(-rectis.top + e.touches[0].clientY) * onepixelequals)) + '&longitude=' + encodeURIComponent('' + eval(topllong + eval(-rectis.left + e.touches[0].clientX) * onepixelequals)) + '&ntztontz=y';

    }

    }

    } else if (e.pageX || e.pageY) {

    //lastl='Longitude,Latitude coordinates are ' + eval(topllong + e.clientX * onepixelequals) + ',' + eval(topllat - e.clientY * onepixelequals);

    //alert('02: ' + e.screenX + ' ' + e.pageX + ' ' + e.screenY + ' ' + e.pageY + ' ' + thislong + ' ' + thislat);

    if (drawc(eval(-rectisleft + e.pageX), eval(-rectistop + e.pageY))) {

    //thislat=eval(topllat - eval(-rectistop + e.pageY) * onepixelequals);

    //thislong=eval(topllong + eval(-rectisleft + e.pageX) * onepixelequals);

    thislat=eval(eval(eval(topllat * onepixelequals - eval(-rectistop + e.pageY) * 1)) / onepixelequals);

    thislong=eval(eval(eval(topllong * onepixelequals + eval(-rectisleft + e.pageX) * 1)) / onepixelequals);

    //alert('22: ' + e.screenX + ' ' + e.pageX + ' ' + e.screenY + ' ' + e.pageY + ' ' + thislong + ' ' + thislat);

    //console.log('rectistop=' + rectistop + ' and rectisleft=' + rectisleft + ' and rectisy=' + rectisy + ' aNd thislat=' + thislat + ' and e.pageY=' + e.pageY + ' and new plus idea=' + eval(topllat - eval(rectistop + e.pageY) * onepixelequals));

    //document.getElementById('nearestif').src='/PHP/tz_places.php?place=&latitude=' + encodeURIComponent('' + eval(topllat - eval(-rectistop + e.pageY) * onepixelequals)) + '&longitude=' + encodeURIComponent('' + eval(topllong + eval(-rectisleft + e.pageX) * onepixelequals)) + '&ntztontz=y';

    document.getElementById('nearestif').src='/PHP/tz_places.php?place=&latitude=' + encodeURIComponent('' + thislat) + '&longitude=' + encodeURIComponent('' + thislong) + '&ntztontz=y';

    }

    } else {

    //lastl='Longitude,Latitude coordinates are ' + eval(topllong + eval(-rectis.left + e.pageX) * onepixelequals) + ',' + eval(topllat - eval(-rectis.top + e.pageY) * onepixelequals);

    if (drawc(eval(-rectis.left + e.clientX), eval(-rectis.top + e.clientY))) {

    thislat=eval(topllat - eval(-rectis.top + e.clientY) * onepixelequals);

    thislong=eval(topllong + eval(-rectis.left + e.clientX) * onepixelequals);

    //console.log('rectis.top=' + rectis.top + ' and rectis.left=' + rectis.left + ' and rectis.y=' + rectis.y + ' And thislat=' + thislat);

    document.getElementById('nearestif').src='/PHP/tz_places.php?place=&latitude=' + encodeURIComponent('' + eval(topllat - eval(-rectis.top + e.clientY) * onepixelequals)) + '&longitude=' + encodeURIComponent('' + eval(topllong + eval(-rectis.left + e.clientX) * onepixelequals)) + '&ntztontz=y';

    }

    }

    }

… in ourchanged countries⚫php web✂application you can also try below.

Previous relevant GeoJson World Countries TimeZone Times Tutorial is shown below.

GeoJson World Countries TimeZone Times Tutorial

GeoJson World Countries TimeZone Times Tutorial   🔍

Some readers might be aware of our “theory regarding adverbs” and “web applications” on the net …

  • the most catered for adverb relates to the “where of life” … and the second banana is …
  • the “when of life”

… and, further to yesterday’s GeoJson World Countries SVG Overlay Safari Error Tutorial‘s emphasis on the “where of life”, today we add in a bit of the “when of life”, something right down the line of the remit of TimeZone talents.

Seriously though, a lot of us dream of the rest of the world on a world map, and wonder what time it is in other parts of the world. Phone call to relatives? A reminder SMS call? Email a game collaboration? It could all be part of life’s rich tapestry!

The expresion of this, for us, today, improving the communications with our current GeoJsom World Countries web application, take the form of emoji clocks from the 12 hour clock example forms such as …

  • 1 o’clock is &#128336; 🕐
  • 2 o’clock is &#128337; 🕑
  • 12 o’clock is &#128347; 🕛
  • 2:30 is &#128349; 🕝
  • 11:30 is &#128358; 🕦
  • 12:30 is &#128359; 🕧

… to show in “prompt” and “confirm” popup windows, as well as Map Chart maps … via new Javascript functions …



function clockit(hoursoffgmt) {

// 1 o'clock is 🕐

// 2 o'clock is 🕑

// 12 o'clock is 🕛

// 2:30 is 🕝

// 11:30 is 🕦

// 12:30 is 🕧

var along='Saturday,Sunday,Monday,Tuesday,Wednesday,Thursday,Friday,Saturday,Sunday';

var gmtdatetimeis='' + new Date().toUTCString();

var daybit='';

var ampm=' am';

if (gmtdatetimeis.indexOf('day') != -1) {

ampm+=', ' + gmtdatetimeis.split('day')[0].split(' ')[eval(-1 + gmtdatetimeis.split('day')[0].split(' ').length)] + 'day';

} else if (gmtdatetimeis.indexOf(',') != -1) {

ampm+=', ' + (gmtdatetimeis.split(',')[0].split(' ')[eval(-1 + gmtdatetimeis.split(',')[0].split(' ').length)] + '').replace(/^Sat$/g,'Saturday').replace(/^Sun$/g,'Sunday').replace(/^Mon$/g,'Monday').replace(/^Tue$/g,'Tuesday').replace(/^Wed$/g,'Wednesday').replace(/^Thu$/g,'Thursday').replace(/^Fri$/g,'Friday');

}

if (ampm.length > 3) { daybit=ampm.substring(5); }

var minis=eval('' + gmtdatetimeis.split(':')[1]);

var hris=eval(('' + gmtdatetimeis.split(':')[0]).split(' ')[eval(-1 + ('' + gmtdatetimeis.split(':')[0]).split(' ').length)]);

if (('' + hoursoffgmt).indexOf('-') != -1 && eval(eval('' + hoursoffgmt.replace('+','')) + hris) < 0.0) {

ampm=ampm.replace('am', 'pm');

if (daybit != '') { ampm=ampm.replace(daybit, along.split(',' + daybit)[0].split(',')[eval(-1 + along.split(',' + daybit)[0].split(',').length)]); }

} else if (('' + hoursoffgmt).indexOf('-') == -1 && eval(eval('' + hoursoffgmt.replace('+','')) + hris) >= 24) {

if (daybit != '') { ampm=ampm.replace(daybit, along.split(daybit + ',')[1].split(',')[0]); }

} else if (('' + hoursoffgmt).indexOf('-') == -1 && eval(eval('' + hoursoffgmt.replace('+','')) + hris) >= 12) {

ampm=ampm.replace('am', 'pm');

}

hris+=eval(eval(24 + eval('' + hoursoffgmt.replace('+','').split('.')[0])) % 24);

if (('' + hoursoffgmt.replace('+','')).indexOf('.5') != -1) {

if (('' + hoursoffgmt.replace('+','')).indexOf('-') != -1 && minis >= 30) {

minis-=30;

} else if (('' + hoursoffgmt.replace('+','')).indexOf('-') != -1) {

hris--;

if (hris < 24) { hris=23; ampm=ampm.replace('am', 'pm'); if (daybit != '') { ampm=ampm.replace(daybit, along.split(',' + daybit)[0].split(',')[eval(-1 + along.split(',' + daybit)[0].split(',').length)]); } }

minis+=30;

} else if (('' + hoursoffgmt.replace('+','')).indexOf('-') == -1 && minis < 30) {

minis+=30;

} else if (('' + hoursoffgmt.replace('+','')).indexOf('-') != -1) {

hris++;

if (hris > 24) { hris=24; ampm=ampm.replace('pm', 'am'); if (daybit != '') { ampm=ampm.replace(daybit, along.split(daybit + ',')[1].split(',')[0]); } }

minis-=30;

}

} else if (('' + hoursoffgmt.replace('+','')).indexOf('.25') != -1) {

if (('' + hoursoffgmt.replace('+','')).indexOf('-') != -1 && minis >= 15) {

minis-=15;

} else if (('' + hoursoffgmt.replace('+','')).indexOf('-') != -1) {

hris--;

if (hris < 24) { hris=23; ampm=ampm.replace('am', 'pm'); if (daybit != '') { ampm=ampm.replace(daybit, along.split(',' + daybit)[0].split(',')[eval(-1 + along.split(',' + daybit)[0].split(',').length)]); } }

minis+=15;

} else if (('' + hoursoffgmt.replace('+','')).indexOf('-') == -1 && minis < 45) {

minis+=15;

} else if (('' + hoursoffgmt.replace('+','')).indexOf('-') != -1) {

hris++;

if (hris > 24) { hris=24; ampm=ampm.replace('pm', 'am'); if (daybit != '') { ampm=ampm.replace(daybit, along.split(daybit + ',')[1].split(',')[0]); } }

minis-=15;

}

} else if (('' + hoursoffgmt.replace('+','')).indexOf('.75') != -1) {

if (('' + hoursoffgmt.replace('+','')).indexOf('-') != -1 && minis >= 45) {

minis-=45;

} else if (('' + hoursoffgmt.replace('+','')).indexOf('-') != -1) {

hris--;

if (hris < 24) { hris=23; ampm=ampm.replace('am', 'pm'); if (daybit != '') { ampm=ampm.replace(daybit, along.split(',' + daybit)[0].split(',')[eval(-1 + along.split(',' + daybit)[0].split(',').length)]); } }

minis+=45;

} else if (('' + hoursoffgmt.replace('+','')).indexOf('-') == -1 && minis < 15) {

minis+=45;

} else if (('' + hoursoffgmt.replace('+','')).indexOf('-') != -1) {

hris++;

if (hris > 24) { hris=24; ampm=ampm.replace('pm', 'am'); if (daybit != '') { ampm=ampm.replace(daybit, along.split(daybit + ',')[1].split(',')[0]); } }

minis-=45;

}

}

//alert('' + hoursoffgmt + ' ' + hris + ' ' + minis + ' ' + gmtdatetimeis);




if (minis > 45 && eval(hris % 12) == 0) {

return ' ' + String.fromCodePoint(128336) + ampm;

} else if (eval(hris % 12) == 0 && minis <= 15) {

return ' ' + String.fromCodePoint(128347) + ampm;

} else if (eval(hris % 12) == 0) {

return ' ' + String.fromCodePoint(128359) + ampm;

} else if (minis >= 45) {

return ' ' + String.fromCodePoint(eval(eval(hris % 12) + 128336)) + ampm;

} else if (minis <= 15) {

return ' ' + String.fromCodePoint(eval(eval(hris % 12) + 128335)) + ampm;

} else {

return ' ' + String.fromCodePoint(eval(eval(hris % 12) + 128347)) + ampm;

}

return '';

}



function emfilter(inih) {

var bcxs=inih.split(' &#');

var bitis='', ib=0;

var outih=inih;

for (ib=1; ib<bcxs.length; ib++) {

bitis=' &#' + bcxs[ib].split(' ')[0];

outih=outih.replace(bitis, ' ' + eval('String.fromCodePoint(' + bitis.substring(3).replace(/\;\&\#/g,',').replace(/\;/g,'') + ')'));

}

bcxs=outih.split('(');

for (ib=1; ib<bcxs.length; ib++) {

if (bcxs[ib].split(')')[0].indexOf(',') == -1 && bcxs[ib].split(')')[0].indexOf(' ') == -1 && (bcxs[ib].substring(0,1) == '-' || bcxs[ib].substring(0,1) == '+' || (bcxs[ib].substring(0,1) >= '0' && bcxs[ib].substring(0,1) <= '9'))) {

outih=outih.replace('(' + bcxs[ib].split(')')[0] + ')', '(' + bcxs[ib].split(')')[0] + clockit(bcxs[ib].split(')')[0]) + ')');

}

}

return outih;

}

Also, in these same places we add in Time Place country ISO-2 character code based emoji flags, adding to information and colour pizazz in the informational parts to the workings of ourchanged countries⚫php web✂application you can also try below.

Previous relevant GeoJson World Countries SVG Overlay Safari Error Tutorial is shown below.

GeoJson World Countries SVG Overlay Safari Error Tutorial

GeoJson World Countries SVG Overlay Safari Error Tutorial   🔍

Mostly on smaller devices (such as an iPhone), but elsewhere as well, but less drastically, this morning, using our current Display GeoJson Countries web application we would get the Safari web browser error …

A problem repeatedly occurred with https://www.rjmprogramming.com.au/HTMLCSS/countries.php

… with web application work up to yesterday’s GeoJson World Countries SVG Overlay Colour Infill Tutorial.

On discovering our first solution theory of turning yesterday’s mapsvg.js external Javascript work into an async piece of work made no difference to this situation, we surmised that the huge amount of content held in the Javascript (ie. client side) global variable appendtoinnerHTML was causing memory issues. We couldn’t shift much to do with the overall amount of “data” needing to be handled, in order to implement country SVG colour infilling, but we could shift the data from being …

  • client side (external) Javascript held … to, instead, (have that data) be (determined on the) …
  • server side PHP filling in the contents of our (relevant) HTML div id=svgd ahead of the document.body onload event timing …
    <?php


    $icnt=0;



    function apptohtmstuff($coordsare, $origc) {

    global $icnt;

    $minl=-1;

    $mint=-1;

    $maxl=-1;

    $maxt=-1;

    $zysare=explode(',', $coordsare);

    $svgcis='';

    for ($ij=0; $ij<sizeof($zysare); $ij+=2) {

    if ($minl < 0) {

    $minl=$zysare[$ij];

    $maxl=$zysare[$ij];

    $mint=$zysare[1 + $ij];

    $maxt=$zysare[1 + $ij];

    } else {

    if ($zysare[$ij] < $minl) { $minl=$zysare[$ij]; }

    if ($zysare[$ij] > $maxl) { $maxl=$zysare[$ij]; }

    if ($zysare[1 + $ij] < $mint) { $mint=$zysare[1 + $ij]; }

    if ($zysare[1 + $ij] > $maxt) { $maxt=$zysare[1 + $ij]; }

    }

    }



    for ($ij=0; $ij<sizeof($zysare); $ij+=2) {

    if ($svgcis == '') {

    $svgcis='' . ($zysare[$ij] - $minl) . ',' . ($zysare[1 + $ij] - $mint);

    } else {

    $svgcis.=' ' . ($zysare[$ij] - $minl) . ',' . ($zysare[1 + $ij] - $mint);

    }

    }



    $icnt++;

    return '<div title="' . $coordsare . '" id="dsa' . (-1 + $icnt) . '" style="position:absolute;left:' . $minl . 'px;top:' . $mint . 'px;width:' . ($maxl - $minl) . 'px;height:' . ($maxt - $mint) . ';display:BLOCK;z-index:24;"><svg height="100%" width="100%"><polygon points="' . $svgcis . '" style="fill:lime;stroke:purple;stroke-width:1"></polygon></svg></div>';

    }


    ?>
    … meaning the web application’s underlying HTML size increased at the expense of no need for external Javascript involvement any more

… in ourchanged countries⚫php web✂application you can also try below.

We’re not exactly sure why, but …

  • this improved web application stability …

    …everywhere … and an idea we’d ditched yesterday of …
  • idea to pre-colour “land” parts of the world GeoJson map green (ahead of the document.body onload event) also came good (after causing problems yesterday)

… meaning now, “overlay” wise, we could say …

  • document.body lowest level …
  • overlayed by HTML canvas element plotted with world country linework …
  • overlayed by HTML img (transparent image) element and its associated image map area elements … and today we add into the mix …
  • HTML div hosting SVG elements overlaying initialized with “land” parts green infilled SVG at a mid range z-index (only as well as when called upon) individual GeoJson entities overlay

… and we (reckon we’ve) improved the colour coding user experience at the same time.

We noticed that tweaks in the changed …



var lastflagged='', appendtoinnerHTML='', waitplease=false; // used to make sure "area" element onclick code precedes any document.body onmousedown or ontouchdown code



function checkdsa(ath) {

waitplease=true;

var wasih='';

var athcoords=('' + ath.coords); //.substring(0, Math.floor(eval(0.1 * ('' + ath.coords).length)));

if (document.getElementById('svgd').innerHTML.indexOf(('' + athcoords)) != -1) {

wasih='<div title=' + String.fromCharCode(34) + '' + ath.coords + document.getElementById('svgd').innerHTML.split(ath.coords)[1].split('<div ')[0];

if (lastflagged == '') {

if (wasih.indexOf(' id=' + String.fromCharCode(34)) != -1) { lastflagged=wasih.split(' id=' + String.fromCharCode(34))[1].split(String.fromCharCode(34))[0]; } else { lastflagged=''; }

} else {

document.getElementById(lastflagged).innerHTML=document.getElementById(lastflagged).innerHTML.replace(/rgba\(255\,87\,51\,0.5\)/g, 'rgba(200,200,200,0.3)');

if (wasih.indexOf(' id=' + String.fromCharCode(34)) != -1) { lastflagged=wasih.split(' id=' + String.fromCharCode(34))[1].split(String.fromCharCode(34))[0]; } else { lastflagged=''; }

}

if (lastflagged != '') {

document.getElementById(lastflagged).innerHTML=document.getElementById(lastflagged).innerHTML.replace('z-index:24;', 'z-index:123;').replace('lime;', 'rgba(255,87,51,0.5);');

document.getElementById(lastflagged).title=ath.title;

} else {

document.getElementById('svgd').innerHTML=document.getElementById('svgd').innerHTML.replace(wasih, '<div title=' + String.fromCharCode(34) + '' + ath.title + wasih.split(ath.coords)[1].split('<div ')[0].replace('none;', 'block;z-index:123;').replace('lime;', 'rgba(255,87,51,0.5);'));

}

} else if (('' + appendtoinnerHTML).indexOf(('' + athcoords)) != -1) {

if (document.getElementById('svgd').innerHTML.indexOf(' title=' + String.fromCharCode(34) + '' + ath.title + '' + String.fromCharCode(34) + '') != -1) {

document.getElementById('svgd').innerHTML=document.getElementById('svgd').innerHTML.replace(/rgba\(255\,87\,51\,0.5\)/g, 'rgba(200,200,200,0.3)');

document.getElementById('svgd').innerHTML+='<div title=' + String.fromCharCode(34) + '' + ath.title + appendtoinnerHTML.split(ath.coords)[1].split('<div ')[0].replace('none;', 'block;z-index:123;').replace(/\ id\=/g, ' data-id=').replace('lime;', 'rgba(255,87,51,0.5);');

} else {

document.getElementById('svgd').innerHTML=document.getElementById('svgd').innerHTML.replace(/rgba\(255\,87\,51\,0.5\)/g, 'rgba(200,200,200,0.3)');

document.getElementById('svgd').innerHTML+='<div title=' + String.fromCharCode(34) + '' + ath.title + appendtoinnerHTML.split(ath.coords)[1].split('<div ')[0].replace('none;', 'block;z-index:123;').replace('lime;', 'rgba(255,87,51,0.5);');

}

}

waitplease=false;

return '';

}

… also lessened the burden on the client side by only asking any Javascript DOM command operations act on single HTML element at a time, not a whole swathe of hosted ones, in any operation.

Previous relevant GeoJson World Countries Geo Chart Tutorial is shown below.

GeoJson World Countries Geo Chart Tutorial

GeoJson World Countries Geo Chart Tutorial   🔍

There are many advantages regarding today’s task to …

Integrate Google Chart Geo Chart

… as an additional “drill down” map option, functionality adding onto the work of yesterday’s GeoJson World Countries Tutorial.

What deducible data item needs to be determined for these Geo Charts to work? We need a way to deduce ISO-2 character country codes from the ISO-3 character codes existing in the GeoJson “countries.geojson” data from yesterday’s work. We happened upon the extremely generous mapping data webpage to help with these ISO-2 character deductions …

<?php


$geojsonis=file_get_contents('countries.geojson');

$parts=explode("]]", $geojsonis);

$globalattr="";

$mappings=file_get_contents('http://gist.github.com/tadast/8827699'); // thanks

if (strpos($mappings, '>IN</td>') !== false) {

$mappings.='<td>IN</td><td>KAS</td><td>EH</td><td>SAH</td><td>SO</td><td>SOL</td><td>SS</td><td>SDS</td><td>XK</td><td>KOS</td><td>CY</td><td>CYN</td></body>';

}



for ($i=0; $i<(-1 + sizeof($parts)); $i++) {

if (strpos($parts[$i], '"sr_sov_a3":"') !== false) {

$globalattr=' data-iso3="' . explode('"', explode('"sr_sov_a3":"', $parts[$i])[1])[0] . '"';

if (strpos($mappings, '>' . explode('"', explode('"sr_sov_a3":"', $parts[$i])[1])[0] . '</td>') !== false) {

$iparts=explode('>' . explode('"', explode('"sr_sov_a3":"', $parts[$i])[1])[0] . '</td>', $mappings);

$globalattr.=' data-iso2="' . explode('>', explode('</td>', $iparts[0])[-2 + sizeof(explode('</td>', $iparts[0]))])[-1 + sizeof(explode('>', explode('</td>', $iparts[0])[-2 + sizeof(explode('</td>', $iparts[0]))]))] . '"';

} else if (substr(explode('"', explode('"sr_sov_a3":"', $parts[$i])[1])[0],-1,1) >= '0' && substr(explode('"', explode('"sr_sov_a3":"', $parts[$i])[1])[0],-1,1) <= '9') {

$globalattr.=' data-iso2="' . substr(explode('"', explode('"sr_sov_a3":"', $parts[$i])[1])[0],0,2) . '"';

}

}

if (strpos($parts[$i], '"sr_subunit":"') !== false) {

$globalattr.=' data-cname="' . explode('"', explode('"sr_subunit":"', $parts[$i])[1])[0] . '"';

}

$coords=str_replace('[','',str_replace(']','',explode('[[' , $parts[$i])[-1 + sizeof(explode('[[' , $parts[$i]))]));

$newcoords=$coords;

if (!$dolatlong || 1 == 1) {

$lls=explode(",", $coords);

$newcoords="";

for ($j=0; $j<sizeof($lls); $j+=2) {

$lls[$j]=($lls[$j] + $longoff) * $factor;

$lls[$j + 1]=($lls[$j + 1] + $latoff) * $factor;

if ($newcoords != "") { $newcoords.=","; $htmlis=str_replace("}", " context.lineTo(" . $lls[$j] . ',' . ((180.0 * $factor) - $lls[$j + 1]) . "); \n}", $htmlis); } else { $htmlis=str_replace("}", " context.stroke(); \n context.beginPath(); \n context.moveTo(" . $lls[$j] . ',' . ((180.0 * $factor) - $lls[$j + 1]) . "); \n}", $htmlis); }

$newcoords.='' . $lls[$j] . ',' . ((180.0 * $factor) - $lls[$j + 1]);

}

}

$abit.="<area" . $globalattr . " onclick=\"ouralert(this.getAttribute('data-cname'),this.getAttribute('data-iso3'),this.getAttribute('data-iso2'),'Longitude,Latitude coordinates are " . $coords . "');\" shape='poly' coords='" . $newcoords . "'></area>\n";

//echo "<area type='poly' coords='" . $newcoords . "'></area>\n";

}


?>

… in our image map area elements PHP creation code above. As you can see, extra “intelligence”, moving forward, is contained in area element global data attributes.

Which leaves us with why any of this helps functionality within ourchanged countries⚫php web✂application you can also try below?

  • Geo Chart can zoom into a country view …
  • Geo Chart can involve emoji (🏠 &127968;) or image (SVG) circle based symbology for the “User Clicked Place” and nearby TimeZone places respectively …
  • all these symbols can be clicked to open popup windows containing TimeZone Place Wikipedia webpages of relevance …
  • an emoji national flag (eg. Zambia “ZA” could be used to derive &#127487;&#127462; 🇿🇦 flag emoji) derived from those ISO-2 character codes can supplement the GeoJson (more ISO-3 character based) names presented in the underlying data, in the Geo Chart title …
  • contextualizing the accompanying Map Chart … and …
  • vice versa regarding hovering over symbology (which works on Map Chart, but not Geo Chart) …
  • within the Map Chart iframe a “Geo” link can glean a “zoomed out” world Geo Chart view of your TimeZone places

And feel free to (re-)try ourtweaked “to make thinner the coastline linework” regions⚫php GeoJson PHP web application in a new window, or you can also try below.

Previous relevant GeoJson World Countries Tutorial is shown below.

GeoJson World Countries Tutorial

GeoJson World Countries Tutorial   🔍

Know your GeoJson! Yes, pretty obviously, any two GeoJson datasets might display the same in that “map plotting” sense, but one might have different and/or more “intelligence” than the other. Often, an XML has more “intelligence” than equivalent HTML (barring the use of global data attributes, that is), as today’s Corollacorollary.

And so, moving on from yesterday’s GeoJson World Coastline TimeZone Tutorial, today, we present a new GeoJson admin 0 countries we download, and upload as “countries.geojson” data set, again via the excellent HTTP://geojson.xyz/ repository, thanks.

From it, we do get a different JSON additional “intelligence” …



{"type":"FeatureCollection","features":[{"type":"Feature","properties":{"scalerank":1,"labelrank":1,"sr_sov_a3":"ZWE","sr_adm0_a3":"ZWE","sr_gu_a3":"ZWE","sr_su_a3":"ZWE","sr_subunit":"Zimbabwe","featureclass":"Admin-0 scale ranks"},"geometry":{"type":"Polygon","coordinates":[[[31.287890625000017,-22.40205078125001],[31.197265625,-22.34492187500001],[31.07343750000001,-22.30781250000001],[30.916113281250006,-22.29072265625001],[30.71162109375001,-22.2978515625],[30.46015625000001,-22.32900390625001],[30.1904296875,-22.291113281250006],[29.90234375,-22.184179687500006],[29.6630859375,-22.146289062500003],[29.37744140625,-22.19277343750001],[29.36484375,-22.193945312500006],[29.315234375000017,-22.15771484375],[29.237207031250023,-22.07949218750001],[29.106835937500023,-22.065722656250003],[29.07148437500001,-22.047460937500006],[29.042382812500023,-22.018359375],[29.023339843750023,-21.98125],[29.01582031250001,-21.93994140625],[29.03730468750001,-21.811328125],[29.02558593750001,-21.796875],[28.99072265625,-21.78144531250001],[28.919335937500023,-21.766015625],[28.74775390625001,-21.707617187500006],[28.532031250000017,-21.65126953125001],[28.181640625,-21.58935546875],[28.04560546875001,-21.573046875],[28.014062500000023,-21.55419921875],[27.974609375,-21.50673828125001],[27.90742187500001,-21.35908203125001],[27.844140625000023,-21.261523437500003],[27.693457031250006,-21.11103515625001],[27.66943359375,-21.064257812500003],[27.67695312500001,-20.94482421875],[27.688085937500006,-20.84833984375001],[27.70429687500001,-20.76640625],[27.69697265625001,-20.689746093750003],[27.69482421875,-20.59453125],[27.699609375000023,-20.53066406250001],[27.679296875,-20.503027343750006],[27.624609375,-20.48359375000001],[27.46894531250001,-20.47480468750001],[27.28076171875,-20.47871093750001],[27.27460937500001,-20.3818359375],[27.256738281250023,-20.23203125],[27.221484375000017,-20.145800781250003],[27.17822265625,-20.10097656250001],[27.091796875,-20.05419921875],[26.91669921875001,-19.99013671875001],[26.67822265625,-19.89277343750001],[26.474609375,-19.748632812500006],[26.241015625000017,-19.5693359375],[26.168066406250006,-19.53828125000001],[26.081933593750023,-19.369921875],[25.95068359375,-19.08173828125001],[25.95917968750001,-18.985644531250003],[25.939355468750023,-18.93867187500001],[25.811914062500023,-18.79707031250001],[25.78369140625,-18.72353515625001],[25.76123046875,-18.64921875],[25.55830078125001,-18.441796875],[25.4892578125,-18.35126953125001],[25.43671875000001,-18.234960937500006],[25.384375,-18.14199218750001],[25.340234375000023,-18.1044921875],[25.28242187500001,-18.04121093750001],[25.242285156250006,-17.969042968750003],[25.224023437500023,-17.91523437500001],[25.239062500000017,-17.843066406250003],[25.2587890625,-17.793554687500006],[25.451757812500006,-17.84511718750001],[25.55712890625,-17.84951171875001],[25.6396484375,-17.82412109375001],[25.741601562500023,-17.858203125],[25.86328125,-17.951953125],[25.995898437500017,-17.969824218750006],[26.139550781250023,-17.91171875],[26.333398437500023,-17.929296875],[26.577539062500023,-18.022558593750006],[26.779882812500006,-18.04150390625],[27.020800781250017,-17.95839843750001],[27.235742187500023,-17.728320312500003],[27.437890625000023,-17.51191406250001],[27.63671875,-17.262109375],[27.75654296875001,-17.060351562500003],[27.932226562500006,-16.89619140625001],[28.16376953125001,-16.76972656250001],[28.399804687500023,-16.66279296875001],[28.760644531250023,-16.53193359375001],[28.760546875000017,-16.53212890625001],[28.83271484375001,-16.424121093750003],[28.856738281250017,-16.30615234375],[28.856738281250017,-16.14228515625001],[28.875585937500006,-16.0361328125],[28.9130859375,-15.98779296875],[28.973046875000023,-15.950097656250009],[29.050585937500017,-15.901171875],[29.287890625000017,-15.776464843750006],[29.4873046875,-15.69677734375],[29.729589843750006,-15.644628906250006],[29.994921875000017,-15.64404296875],[30.25068359375001,-15.643457031250009],[30.39609375,-15.64306640625],[30.39814453125001,-15.80078125],[30.409375,-15.978222656250011],[30.437792968750017,-15.995312500000011],[30.630175781250017,-15.999218750000011],[30.938769531250017,-16.01171875],[31.236230468750023,-16.02363281250001],[31.426171875000023,-16.15234375],[31.48984375,-16.1796875],[31.687597656250006,-16.214160156250003],[31.939843750000023,-16.428808593750006],[32.243261718750006,-16.44873046875],[32.45195312500002,-16.515722656250006],[32.635839843750006,-16.589453125],[32.741796875,-16.67763671875001],[32.81025390625001,-16.69765625],[32.902929687500006,-16.704199218750006],[32.94804687500002,-16.71230468750001],[32.93789062500002,-16.775976562500006],[32.87626953125002,-16.88359375],[32.884375,-17.03779296875001],[32.969335937500006,-17.2515625],[32.98076171875002,-17.4375],[32.9546875,-17.765429687500003],[32.95556640625,-18.08291015625001],[32.96464843750002,-18.1962890625],[32.978515625,-18.271484375],[32.99638671875002,-18.312597656250006],[32.99306640625002,-18.35957031250001],[32.942480468750006,-18.49267578125],[32.90166015625002,-18.632910156250006],[32.90029296875002,-18.6890625],[32.88457031250002,-18.728515625],[32.8544921875,-18.763671875],[32.72197265625002,-18.828417968750003],[32.69921875,-18.868457031250003],[32.69970703125,-18.94091796875],[32.71650390625001,-19.00185546875001],[32.766210937500006,-19.02431640625001],[32.826171875,-19.05878906250001],[32.84980468750001,-19.10439453125001],[32.85,-19.152441406250006],[32.83095703125002,-19.24140625000001],[32.77763671875002,-19.388769531250006],[32.83076171875001,-19.558203125],[32.89042968750002,-19.668066406250006],[32.97265625,-19.79541015625],[33.00673828125002,-19.873828125],[33.0048828125,-19.93017578125],[32.992773437500006,-19.98486328125],[32.86962890625,-20.2171875],[32.780859375,-20.36152343750001],[32.67255859375001,-20.51611328125],[32.529296875,-20.613085937500003],[32.49238281250001,-20.659765625],[32.477636718750006,-20.712988281250006],[32.48281250000002,-20.82890625],[32.476171875,-20.95009765625001],[32.353613281250006,-21.136523437500003],[32.429785156250006,-21.29707031250001],[32.41240234375002,-21.311816406250003],[32.37109375,-21.33486328125001],[32.19472656250002,-21.515429687500003],[32.01630859375001,-21.698046875],[31.88593750000001,-21.83154296875],[31.737695312500023,-21.9833984375],[31.57148437500001,-22.15351562500001],[31.429492187500017,-22.298828125],[31.287890625000017,-22.40205078125001]]]}}

… and “mapping look” because country borders are added in, and some JSON attributes we can call on to allow for …

  • the similar Google Chart Map Chart maps introduced yesterday into the user interaction mix … as well as …
  • Wikipedia, thanks, webpage lookup possibilities calling on those new GeoJson property attributes presented within the dataset above

We enable this, as we just add in some Javascript popup window type equals “prompt” to the existant “confirm” and “alert” logic of yesterday.

Feel free to try thehow we got there regions⚫php GeoJson PHP World Countries web application in a new window, or below …

Previous relevant GeoJson World Coastline TimeZone Tutorial is shown below.

GeoJson World Coastline TimeZone Tutorial

GeoJson World Coastline TimeZone Tutorial   🔍

Luckily for programmers all over, the organization of TimeZones has had an International flavour in its development and maintenance. As such, given the “purely coastline” GeoJson data involved in our fledgling PHP web application of yesterday’s GeoJson World Coastline Primer Tutorial a useful arrangement for improvement involves …

  • document.body onclick event co-ordinates … able to be converted to …
  • longitude, latitude (easily, only because of our simplistic map projection, of course) … onfed to …
  • our inhouse “TimeZone Places” web application PHP helper

… can have us helping out your curious web “clicking” user with the 3 nearest TimeZone places, as a reference as to where they are “clicking” in the world.

Feel free to try ourimproved regions⚫php GeoJson PHP web application in a new window, or below …

Stop Press

Our efforts in making ournew tweaked regions⚫php GeoJson PHP web application more mobile platform user friendly reminds us about a salutary issue regarding touch gestures …

  • in a discrete click methodology of interest, you could adopt a non-mobile “onmousedown” logic set that does not get interfered with by a mobile “ontouchdown” logic set (perhaps leaving “onclick” event, which both non-mobile and mobile both recognise, for another event logic role) … and …
  • neither will interrupt the mobile gestures associated with swiping and pinching, which refer to the events “ontouchstart” and “ontouchend” at either end of their lifespan

Previous relevant GeoJson World Coastline Primer Tutorial is shown below.

GeoJson World Coastline Primer Tutorial

GeoJson World Coastline Primer Tutorial   🔍

We’re keen to further explore the possibilities of GeoJson public data sets, further to yesterday’s Swift Playgrounds on macOS Map Emoji Tutorial.

And then we remembered some of the methodologies we used with Responsive Web Design Landing Page Image Map Tutorial, talking about image maps …

And so, we arrive at a long planned for tilt at Image Map functionality that we often turn to Mobilefish.Com and its excellent Image Map Creation to help us out … but not today?! Why not? We have a funny set of needs, they being …

  • our Image Map’s image will have a variable set of width x height dimensions …
  • our Image Map’s image will be transparent
  • our Image Map needs to have a hole left aside inside it where the functionality that originally existed (and pointed to WordPress Blog content like you are reading), is still working

… the first two ideas of which, along with …

… in our “early days” “proof of concept” regions⚫php GeoJson PHP web application.

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