cartodb/lib/assets/javascripts/cdb/examples/openlayers3.html

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2020-06-15 10:58:47 +08:00
<!DOCTYPE html>
<html>
<head>
<title>OpenLayers 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://openlayers.org/en/v3.12.1/css/ol.css" type="text/css">
</head>
<body>
<div id="map"></div>
<!-- include cartodb.core.js library -->
<script src="https://libs.cartocdn.com/cartodb.js/v3/3.15/cartodb.core.js"></script>
<script src="http://openlayers.org/en/v3.12.1/build/ol.js"></script>
<script type="text/javascript">
var map, layer;
function init() {
// request cartodb layer
// most populated places rendered with red markers
cartodb.Tiles.getTiles({
type: 'cartodb',
user_name: 'examples',
sublayers: [{
sql: 'select * from ne_10m_populated_p_2',
cartocss: '#ne_10m_populated_p_2{ marker-fill: #F11810; marker-opacity: 0.9; marker-allow-overlap: true; marker-placement: point; marker-type: ellipse; marker-width: 7.5; marker-line-width: 2; marker-line-color: #000; marker-line-opacity: 0.2; }'
}]
}, function(tileTemplate) {
// generate urls for openlayers
var tilesUrl = []
for(var i = 0; i < 4; ++i) {
tilesUrl.push(
tileTemplate.tiles[0]
.replace('{s}', 'abcd'[i])
);
}
var map = new ol.Map({
target: 'map',
layers: [
new ol.layer.Tile({
source: new ol.source.XYZ({
attributions: [new ol.Attribution({
html: '© <a href="http://cartodb.com/attributions">CartoDB</a> ' +
<a href="http://www.openstreetmap.org/copyright">' +
'OpenStreetMap contributors</a>'
})],
url:'https://{1-4}.basemaps.cartocdn.com/light_all/{z}/{x}/{y}.png'
})
}),
new ol.layer.Tile({
source: new ol.source.XYZ({
attributions: [new ol.Attribution({ html: "CartoDB, populated places"})],
urls: tilesUrl
})
})
],
view: new ol.View({
center: ol.proj.fromLonLat([0, 0]),
zoom: 4
})
});
});
}
init();
</script>
</body>
</html>