Australian Postcode Place Distances Primer Tutorial

Australian Postcode Place Distances Primer Tutorial

It’s time to return to a “where of life” web application tutorial. Why? No, “where”. Who’s on second. But, seriously, the reason is that we found a great Australian Postcode resource for geodata lookups of these Australian placenames or postcodes … thanks.

Combine this …

• Australian postcode (or placename) latitude and longitude … with …
• another Australian postcode (or placename) latitude and longitude … and we can …
• show the user a great circle distance between the two places … as well as a link to …
• Google Maps Directions map between the two places … and there you can imagine we have a bit of a …
• trip planner

… on our hands.

We can add our own client geographical position into the mix via …


function getLocation() {
if (navigator.geolocation) {
try {
navigator.geolocation.getCurrentPosition(showPosition);
setTimeout(later, 2000);
} catch(err) {
setTimeout(later, 2000);
}
} else {
document.getElementById('you').innerHTML='(0,0)';
if (document.getElementById('inlat') && document.getElementById('inlong')) {
document.getElementById('inlat').value=userlatitude;
document.getElementById('inlong').value=userlongitude;
}
if (document.getElementById('ipostcode')) {
document.getElementById('ipostcode').click();
newthree();
}
}
}


function showPosition(position) {
if (userlatitude == 0.0 && userlongitude == 0.0) {
userlatitude=eval('' + position.coords.latitude);
userlongitude=eval('' + position.coords.longitude);
if (document.getElementById('inlat') && document.getElementById('inlong')) {
document.getElementById('inlat').value=userlatitude;
document.getElementById('inlong').value=userlongitude;
}
if (document.getElementById('ipostcode')) {
document.getElementById('ipostcode').click();
newthree();
}
}
}


… that you can see involved in the PHP australia_place_crowfly_distances.php‘s live run link, for your perusal.

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