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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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