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December 26, 2015 19:39
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Basic CartoDB, Leaflet, UTFGrid example.
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<!DOCTYPE html> | |
<html> | |
<head> | |
<title>Leaflet CartoDB Example</title> | |
<meta charset="utf-8" /> | |
<meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.6.4/leaflet.css" /> | |
<style> | |
body { margin:0; padding:0; } | |
#map { position:absolute; top:0; bottom:0; width:100%; } | |
</style> | |
</head> | |
<body> | |
<div id="map"></div> | |
<script src="http://cdn.leafletjs.com/leaflet-0.6.4/leaflet.js"></script> | |
<script src="http://danzel.github.io/Leaflet.utfgrid/src/leaflet.utfgrid.js"></script> | |
<script> | |
var map = L.map('map').setView([42.373611, -71.110556], 12); | |
L.tileLayer('http://{s}.tile.stamen.com/toner-background/{z}/{x}/{y}.png', { | |
attribution: 'Map tiles by <a href="http://stamen.com">Stamen Design</a>, <a href="http://creativecommons.org/licenses/by/3.0">CC BY 3.0</a> — Map data © <a href="http://openstreetmap.org">OpenStreetMap</a> contributors, <a href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>', | |
subdomains: 'abcd', | |
minZoom: 0, | |
maxZoom: 20 | |
}).addTo(map); | |
L.tileLayer('http://cspanring.cartodb.com/tiles/cambridge_neighborhoods/{z}/{x}/{y}.png', { | |
attribution: 'City of Cambridge, MA', | |
minZoom: 9, | |
maxZoom: 12 | |
}).addTo(map); | |
var utfGrid = new L.UtfGrid('http://cspanring.cartodb.com/tiles/cambridge_neighborhoods/{z}/{x}/{y}.grid.json?callback={cb}&interactivity=name'); | |
map.addLayer(utfGrid); | |
utfGrid.on('click', function (e) { | |
if (e.data) { | |
alert( 'Cambridge Neighorhood: ' + e.data.name ); | |
} else { | |
alert( 'Not a Cambridge Neighorhood.' ); | |
} | |
}); | |
</script> | |
</body> | |
</html> |
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