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Polygon connections
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Map Connections | 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() { | |
| var map = new L.Map('map', { | |
| zoomControl: false, | |
| center: [40, -93], | |
| zoom: 5 | |
| }); | |
| function addCursorInteraction(layer) { | |
| var hovers = []; | |
| layer.bind('featureOver', function(e, latlon, pxPos, data, layer) { | |
| hovers[layer] = 1; | |
| if(_.any(hovers)) { | |
| $('#map').css('cursor', 'pointer'); | |
| } | |
| }); | |
| layer.bind('featureOut', function(m, layer) { | |
| hovers[layer] = 0; | |
| if(!_.any(hovers)) { | |
| $('#map').css('cursor', 'auto'); | |
| } | |
| }); | |
| } | |
| // precanned function to handle link lines | |
| var lines = {}; | |
| function geometryClick(username, map, layer, options) { | |
| options = options || {} | |
| var LINE_STYLE = { | |
| weight: 2, | |
| color: '#A53ED5', | |
| opacity: 0.2 | |
| }; | |
| style = options.style || LINE_STYLE; | |
| var linesHighlighted = []; | |
| // fetch the geometry | |
| var sql = new cartodb.SQL({ user: username, format: 'geojson' }); | |
| function featureClick(e, pos, latlng, data) { | |
| lin = lines || []; | |
| for(var i = 0; i < lin.length; ++i) { | |
| map.removeLayer(lin[i]); | |
| } | |
| lines = []; | |
| sql.execute("SELECT ST_MakeLine(the_geom, (SELECT ST_Centroid(the_geom) FROM lower_48_zips WHERE cartodb_id = "+data.cartodb_id+")) the_geom FROM us_ski_areas WHERE mindist < 1000").done(function(geojson) { | |
| var features = geojson.features; | |
| for(var i = 0; i < features.length; ++i) { | |
| // generate geometry | |
| var geo = L.GeoJSON.geometryToLayer(features[i].geometry); | |
| geo.setStyle(style); | |
| lines.push(geo); | |
| map.addLayer(geo); | |
| } | |
| }); | |
| } | |
| layer.on('featureClick', featureClick); | |
| layer.setInteraction(true); | |
| } | |
| // create a layer with 1 sublayer | |
| cartodb.createLayer(map, { | |
| user_name: 'andrew', | |
| type: 'cartodb', | |
| sublayers: [{ | |
| sql: "select * from lower_48_zips", | |
| cartocss: '#lower_48_zips{ polygon-fill: #CCCCCC; polygon-opacity: 0.7; line-width: 0.5; line-color: #333333; line-opacity: 0.3;}', | |
| interactivity: 'cartodb_id' | |
| }] | |
| }).done(function(layer) { | |
| map.addLayer(layer); | |
| layer.getSubLayer(0).setInteraction(true); | |
| geometryClick('andrew', map, layer.getSubLayer(0)); | |
| addCursorInteraction(layer); | |
| }); | |
| } | |
| window.onload = main; | |
| </script> | |
| </body> | |
| </html> |
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