Demonstrates switching between mapped attributes using sublayers of a CartoDB layer.
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October 30, 2015 19:01
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CartoDB sublayer switcher
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<!DOCTYPE html> | |
<html> | |
<head> | |
<title>MUG</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; | |
} | |
#layer-controls { | |
position: absolute; | |
top: 15px; | |
right: 15px; | |
margin: 10px 15px; | |
z-index: 100; | |
} | |
</style> | |
<link rel="stylesheet" href="http://libs.cartocdn.com/cartodb.js/v3/3.15/themes/css/cartodb.css" /> | |
</head> | |
<body> | |
<div id="layer-controls"> | |
<button id="sublayer0" class="btn">gas</button> | |
<button id="sublayer1" class="btn">oil</button> | |
<button id="sublayer2" class="btn">d&a</button> | |
</div> | |
<div id="map"></div> | |
<script type="cartocss/html" id="wells-styles"> | |
#ky_oil_and_gas_wells { | |
marker-fill-opacity: 0.9; | |
marker-line-color: #FFF; | |
marker-line-width: .2; | |
marker-line-opacity: 1; | |
marker-placement: point; | |
marker-type: ellipse; | |
marker-width: 3; | |
marker-allow-overlap: true; | |
[zoom > 9]{ | |
marker-width: 5; | |
} | |
[zoom > 9]{ | |
marker-width:7; | |
} | |
[zoom > 9]{ | |
marker-width:9; | |
} | |
} | |
#ky_oil_and_gas_wells[org_result="D&A"] { | |
marker-fill: #a6cee3; | |
} | |
#ky_oil_and_gas_wells[org_result="GAS"] { | |
marker-fill: #FF5C00; | |
} | |
#ky_oil_and_gas_wells[org_result="OIL"] { | |
marker-fill: #850200; | |
} | |
</script> | |
<script src="http://libs.cartocdn.com/cartodb.js/v3/3.15/cartodb.js"></script> | |
<script> | |
var map = new L.Map("map", { | |
center: [38.8369, -84.6847], | |
zoom: 7 | |
}); | |
L.tileLayer('http://tile.stamen.com/toner/{z}/{x}/{y}.png', { | |
attribution: 'Stamen' | |
}).addTo(map); | |
var layerSource = { | |
user_name: 'rgdonohue', | |
type: 'cartodb', | |
sublayers: [{ | |
sql: "SELECT * FROM ky_oil_and_gas_wells WHERE org_result='GAS'", | |
cartocss: $("#wells-styles").text() | |
}, | |
{ | |
sql: "SELECT * FROM ky_oil_and_gas_wells WHERE org_result='OIL'", | |
cartocss: $("#wells-styles").text() | |
}, | |
{ | |
sql: "SELECT * FROM ky_oil_and_gas_wells WHERE org_result='D&A'", | |
cartocss: $("#wells-styles").text() | |
}] | |
} | |
var sublayers = []; | |
cartodb.createLayer(map, layerSource) | |
.addTo(map) | |
.done(function(layer) { | |
for (var i = 0; i < layer.getSubLayerCount(); i++) { | |
sublayers[i] = layer.getSubLayer(i); | |
} | |
}) | |
.error(function(err) { | |
console.log("An error occurred: " + err); | |
}); | |
$("#layer-controls button").on('click', function(e) { | |
var currentLayer = $(e.target).attr('id'), | |
currentIndex = currentLayer.slice(-1); | |
sublayers[currentIndex].toggle(); | |
}); | |
</script> | |
</body> | |
</html> |
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