I have a googlemap with a kml layer embedded and the code I found on google developers forum is below. It is showing meters for distance and sq meters for area. How can I change this to show feet for distance and acres for area? Any help will be appreciated. Thanks.
4046.86 sq meters in 1 acre 3.28084 feet in 1 meter
<script type="text/javascript">
var polyline;
var polygon;
var map;
function initialize() {
var Trigger = new google.maps.LatLng(31.3664951, -98.5192484);
var myOptions = {
zoom: 14,
center: Trigger,
mapTypeId: google.maps.MapTypeId.HYBRID
};
map = new google.maps.Map(document.getElementById('map_canvas'), myOptions);
var lineOptions = {
strokeColor: '#ff0000',
strokeOpacity: 1.0,
strokeWeight: 3
}
var kmlLayer = new google.maps.KmlLayer({
url: 'http://www.website.com/KML/filename.kmz',
suppressInfoWindows: false,
map: map
});
map.setOptions({draggableCursor:'crosshair'});
polyline = new google.maps.Polyline(lineOptions);
polyline.setMap(map);
var gonOptions = {
fillColor: '#0000FF',
fillOpacity: 0.4,
strokeWeight: 0
};
polygon = new google.maps.Polygon(gonOptions);
polygon.setMap(map);
// Add a listener for the click event
google.maps.event.addListener(map, 'click', addLatLng);
}
/**
* Handles click events on a map, and adds a new point to the Polyline.
* Updates the encoding text area with the path's encoded values.
*/
function addLatLng(event) {
var lpath = polyline.getPath();
// Because path is an MVCArray, we can simply append a new coordinate
// and it will automatically appear
lpath.push(event.latLng);
var gpath = polygon.getPath();
gpath.push(event.latLng);
// Update the text field
document.getElementById('lineLength').value = google.maps.geometry.spherical.computeLength(lpath.getArray());
if (gpath.getLength()>2){
var garray = [];
gpath.forEach(function(ll,num){
garray.push(ll);
});
// close loop.
garray.push(gpath.getAt(0));
// bug? Always return 0.
var a = google.maps.geometry.spherical.computeArea(garray);
document.getElementById('polyArea').value = a;
}
}
</script>
Use the conversion factors you have:
3.28084 feet in 1 meter: number in meters * 3.28084 feet / meter = number in feet