Created
April 20, 2015 06:12
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Circles around n locations on a google map (for finding road signs)
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<!DOCTYPE html> | |
<html> | |
<head> | |
<meta name="viewport" content="initial-scale=1.0, user-scalable=no"> | |
<meta charset="utf-8"> | |
<title>Geocoding service</title> | |
<style> | |
html, body, #map-canvas { | |
height: 100%; | |
margin: 0px; | |
padding: 0px | |
} | |
#panel { | |
position: absolute; | |
top: 5px; | |
left: 50%; | |
margin-left: -180px; | |
z-index: 5; | |
background-color: #fff; | |
padding: 5px; | |
border: 1px solid #999; | |
} | |
</style> | |
<script src="https://maps.googleapis.com/maps/api/js?v=3.exp&signed_in=true"></script> | |
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script> | |
<script> | |
var geocoder; | |
var map; | |
function initialize() { | |
geocoder = new google.maps.Geocoder(); | |
var latlng = new google.maps.LatLng(-34.397, 150.644); | |
var mapOptions = { | |
center: new google.maps.LatLng(-34.397, 150.644), | |
zoom: 1 | |
} | |
map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions); | |
//Locations (string), Distance in meters (float) | |
codeAddress("King's Lynn England",39*1609.344); | |
codeAddress("Holt England",6*1609.344); | |
codeAddress("Cromer England",4*1609.344); | |
} | |
function codeAddress(value,distance) { | |
geocoder.geocode( { 'address': value}, function(results, status) { | |
if (status == google.maps.GeocoderStatus.OK) { | |
//map.setCenter(results[0].geometry.location); | |
var populationOptions = { | |
strokeColor: '#FF0000', | |
strokeOpacity: 0.8, | |
strokeWeight: 2, | |
fillColor: '#FF0000', | |
fillOpacity: 0.35, | |
map: map, | |
center: results[0].geometry.location, | |
radius: distance | |
}; | |
// Add the circle for this city to the map. | |
cityCircle = new google.maps.Circle(populationOptions); | |
} else { | |
alert('Geocode was not successful for the following reason: ' + status); | |
} | |
}); | |
} | |
google.maps.event.addDomListener(window, 'load', initialize); | |
</script> | |
</head> | |
<body> | |
<div id="map-canvas"></div> | |
</body> | |
</html> |
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