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Toggling sublayers in named maps
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{ | |
"auth": { | |
"method": "open" | |
}, | |
"layergroup": { | |
"layers": [ | |
{ | |
"options": { | |
"cartocss": "#namedmap_ex_sql_multilayer{ marker-width: 10; marker-fill: #FF0000; marker-allow-overlap: true;}", | |
"cartocss_version": "2.0.1", | |
"interactivity": [ | |
"cartodb_id", | |
"adm1name", | |
"name" | |
], | |
"sql": "SELECT * FROM named_map_sql_example_table WHERE megacity != 1 AND featurecla != 'Admin-0 capital' AND <%= layer0 %> = 1" | |
}, | |
"type": "mapnik" | |
}, | |
{ | |
"options": { | |
"cartocss": "#namedmap_ex_sql_multilayer{ marker-width: 10; marker-fill: #00FF00; marker-allow-overlap: true;}", | |
"cartocss_version": "2.0.1", | |
"interactivity": [ | |
"cartodb_id", | |
"adm1name", | |
"name" | |
], | |
"sql": "SELECT * FROM named_map_sql_example_table WHERE featurecla = 'Admin-0 capital' AND megacity != 1 AND <%= layer1 %> = 1" | |
}, | |
"type": "mapnik" | |
}, | |
{ | |
"options": { | |
"cartocss": "#namedmap_ex_sql_multilayer{ marker-width: 10; marker-fill: #0000FF; marker-allow-overlap: true; }", | |
"cartocss_version": "2.0.1", | |
"interactivity": [ | |
"cartodb_id", | |
"adm1name", | |
"name" | |
], | |
"sql": "SELECT * FROM named_map_sql_example_table WHERE megacity = 1 AND featurecla != 'Admin-0 capital' AND <%= layer2 %> = 1" | |
}, | |
"type": "mapnik" | |
} | |
] | |
}, | |
"name": "namedmap_ex_sql_multilayer", | |
"version": "0.0.1" | |
} |
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<!DOCTYPE html> | |
<html> | |
<head> | |
<title>Named Map with Interactivity | 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; | |
} | |
.showhide { | |
height: 50px; | |
width: 100px; | |
background: rgba(255,0,0,0.8); | |
position: absolute; | |
top: 20px; | |
right: 20px; | |
padding: 5px; | |
border: 1px solid #FFF; | |
border-radius: 5px; | |
cursor: pointer; | |
} | |
</style> | |
<link rel="stylesheet" href="http://libs.cartocdn.com/cartodb.js/v3/themes/css/cartodb.css" /> | |
<!--[if lte IE 8]> | |
<link rel="stylesheet" href="http://libs.cartocdn.com/cartodb.js/v3/themes/css/cartodb.ie.css" /> | |
<![endif]--> | |
</head> | |
<body> | |
<div id="map"></div> | |
<div id="layer0" class="showhide" data="0">Show/hide layer 0</div> | |
<div id="layer1" class="showhide" data="1" style="top: 102px; background: rgba(0,255,0,0.8);">Show/hide layer 1</div> | |
<div id="layer2" class="showhide" data="2" style="top: 184px; background: rgba(0,0,255,0.8);">Show/hide layer 2</div> | |
<!-- include cartodb.js library --> | |
<script src="http://libs.cartocdn.com/cartodb.js/v3/cartodb.js"></script> | |
<script> | |
function main() { | |
// create leaflet map | |
var map = L.map('map', { | |
zoomControl: false, | |
scrollWheelZoom: false, | |
center: [43, 0], | |
zoomControl: true, | |
zoom: 2 | |
}) | |
// add a base layer | |
L.tileLayer('http://tile.stamen.com/toner/{z}/{x}/{y}.png', { | |
attribution: 'Stamen' | |
}).addTo(map); | |
var namedLayerSource = { | |
user_name: 'andye', | |
type: 'namedmap', | |
named_map: { | |
name: "namedmap_ex_sql_multilayer", | |
layers: [{ | |
layer_name: "populated_places", | |
interactivity: "cartodb_id, adm1name, name" | |
}, | |
{ | |
layer_name: "capitals", | |
interactivity: "cartodb_id, adm1name, name" | |
}, | |
{ | |
layer_name: "megacities", | |
interactivity: "cartodb_id, adm1name, name" | |
}] | |
} | |
} | |
// add cartodb layer with one sublayer | |
cartodb.createLayer(map, namedLayerSource) | |
.addTo(map) | |
.done(function(layer) { | |
// Enable interactions events for all sublayers | |
for (var i = 0; i < layer.getSubLayerCount(); ++i ) { | |
layer.getSubLayer(i).on('featureOver', function(e, pos, pixel, data) { | |
console.log("Event #" + data.cartodb_id + ", name " + data.name); | |
}); | |
cdb.vis.Vis.addInfowindow(map,layer.getSubLayer(i),['cartodb_id','name']); | |
} | |
console.log(layer.getSubLayerCount()); | |
var toggle = false; | |
$(".showhide").on('click', function(e) { | |
var layerNum = +$(e.target).attr('data'); | |
toggle = layer.getSubLayer(layerNum).toggle(); | |
console.log("layer " + layerNum + " toggled: " + toggle); | |
}); | |
}) | |
.error(function(err) { | |
console.log("error: " + err); | |
}); | |
} | |
window.onload = main; | |
</script> | |
</body> | |
</html> |
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