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example loading multiple layers from cartodb in a leaflet map
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<!DOCTYPE html> | |
<html> | |
<head> | |
<title>Leaflet example | CartoDB.js</title> | |
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" /> | |
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/> | |
<link rel="shortcut icon" href="http://cartodb.com/assets/favicon.ico" /> | |
<style> | |
html, body, #map { | |
height: 100%; | |
padding: 0; | |
margin: 0; | |
} | |
</style> | |
<link rel="stylesheet" href="http://libs.cartocdn.com/cartodb.js/v3/themes/css/cartodb.css" /> | |
</head> | |
<body> | |
<div id="map"></div> | |
<!-- include cartodb.js library --> | |
<script src="http://libs.cartocdn.com/cartodb.js/v3/cartodb.js"></script> | |
<script src="http://d3js.org/queue.v1.min.js"></script> | |
<script> | |
function main() { | |
var map = new L.Map('map', { | |
zoomControl: false, | |
center: [43, 0], | |
zoom: 3 | |
}); | |
L.tileLayer('http://tile.stamen.com/toner/{z}/{x}/{y}.png', { | |
attribution: 'Stamen' | |
}).addTo(map); | |
var layers = [ | |
'http://documentation.cartodb.com/api/v2/viz/2b13c956-e7c1-11e2-806b-5404a6a683d5/viz.json', | |
'http://documentation.cartodb.com/api/v2/viz/236085de-ea08-11e2-958c-5404a6a683d5/viz.json' | |
// add here more layers | |
] | |
var q = queue(3); | |
layers.forEach(function(vizjson) { | |
q.defer(function(vizjson, callback) { | |
cartodb.createLayer(map, vizjson, function(layer) { callback(null, layer); }) | |
}, vizjson); | |
}) | |
q.await(function() { | |
var leafletLayers = Array.prototype.slice.call(arguments, 1); | |
leafletLayers.forEach(function(lyr) { | |
lyr.addTo(map); | |
}); | |
}) | |
} | |
// you could use $(window).load(main); | |
window.onload = main; | |
</script> | |
</body> | |
</html> |
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