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September 9, 2013 09:02
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interactivity for each sublayer
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Leaflet multilayer 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" /> | |
| <!--[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> | |
| <!-- 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, | |
| center: [43, 0], | |
| zoom: 3 | |
| }) | |
| // add a base layer | |
| L.tileLayer('http://tile.stamen.com/toner/{z}/{x}/{y}.png', { | |
| attribution: 'Stamen' | |
| }).addTo(map); | |
| // add cartodb layer with one sublayer | |
| cartodb.createLayer(map, { | |
| user_name: 'examples', | |
| type: 'cartodb', | |
| sublayers: [{ | |
| sql: 'select * from country_boundaries', | |
| cartocss: '#layer { polygon-fill: #F00; polygon-opacity: 0.3; line-color: #F00; }', | |
| interactivity: 'cartodb_id' | |
| }] | |
| }) | |
| .addTo(map) | |
| .done(function(layer) { | |
| var countries = layer.getSubLayer(0); | |
| countries.setInteraction(true) | |
| countries.on('featureOver', function(e, pos, pixel, data) { | |
| console.log("COUNTRIES: " + data.cartodb_id); | |
| }); | |
| // population layer | |
| var population; | |
| population = layer.createSubLayer({ | |
| sql: 'select * from ne_10m_populated_p_2', | |
| cartocss: '#layer { marker-fill: black; line-color: #333; marker-width: 20; }', | |
| interactivity: 'name' | |
| }); | |
| // print on the console the place name on hover | |
| population.on('featureOver', function(e, pos, pixel, data) { | |
| console.log("POPULATION: " + data.name); | |
| }); | |
| population.setInteraction(true); | |
| }); | |
| } | |
| // you could use $(window).load(main); | |
| window.onload = main; | |
| </script> | |
| </body> | |
| </html> |
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