Created
July 6, 2015 20:04
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CartoDB.js Example: BiciMAD
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<html> | |
<head> | |
<link rel="stylesheet" href="http://libs.cartocdn.com/cartodb.js/v3/3.15/themes/css/cartodb.css" /> | |
<style> | |
html, body {width:100%; height:100%; padding: 0; margin: 0;} | |
#map { width: 100%; height:100%; background: black;} | |
#menu { position: absolute; top: 5px; right: 10px; width: 115px; height:60px; background: transparent; z-index:10;} | |
#menu a { | |
margin: 10px 5px 0 0; | |
float: right; | |
vertical-align: bottom; | |
width: 100%; | |
padding: 5px; | |
text-align: center; | |
font: bold 12px "Helvetica",Arial; | |
line-height: normal; | |
color: #555; | |
border-radius: 4px; | |
border: 1px solid #777777; | |
background: #ffffff; | |
text-decoration: none; | |
cursor: pointer; | |
} | |
#menu a.selected, | |
#menu a:hover { | |
color: #F84F40; | |
} | |
</style> | |
</head> | |
<body> | |
<!-- our page only has a map and a menu --> | |
<div id='map'></div> | |
<div id='menu'></div> | |
<!-- load the library --> | |
<script src="http://libs.cartocdn.com/cartodb.js/v3/3.15/cartodb.js"></script> | |
<script> | |
// main function | |
function init(){ | |
// SQL API client | |
var sql = cartodb.SQL({ user: 'jsanz' }); | |
// initiate leaflet map | |
var map = new L.Map('map', { | |
center: [40.4097,-3.685], | |
zoom: 13 | |
}) | |
//Logs current map center and zoom level for use in map init options | |
map.on('dragend',getInit).on('zoomend',getInit); | |
function getInit() { | |
var c = map.getCenter(); | |
console.log('center: [' + c.lat + ',' + c.lng + '],\nzoom: ' + map.getZoom()); | |
} | |
// Set up the base map | |
L.tileLayer('http://{s}.basemaps.cartocdn.com/light_nolabels/{z}/{x}/{y}.png', { | |
attribution: '© <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors, © <a href="http://cartodb.com/attributions">CartoDB</a>' | |
}).addTo(map); | |
// Get the CartoDB Layer and add it to the map storing a reference to the sublayer | |
var layerUrl = 'https://team.cartodb.com/u/jsanz/api/v2/viz/8965950c-23ce-11e5-aa9b-0e5e07bb5d8a/viz.json'; | |
var sublayer, firstSQL, currentId; | |
cartodb.createLayer(map, layerUrl) | |
.addTo(map) | |
.on('done', function(layer) { | |
sublayer = layer.getSubLayer(1); | |
// Store also the original SQL | |
firstSQL = sublayer.getSQL(); | |
}) | |
.on('error', function() {}); | |
// SQL Template for the query of bicimad stations inside a district by its id | |
var SQLTemplate = 'SELECT b.* FROM jsanz.gbicimad b JOIN jsanz.distritos d ON ST_Intersects(d.the_geom, b.the_geom ) AND d.cartodb_id = {{id}}'; | |
// Get the districts with bicimad stations | |
sql.execute('SELECT a.cartodb_id, a.nombre FROM jsanz.distritos a, (SELECT d.cartodb_id as counts_id FROM jsanz.gbicimad b JOIN jsanz.distritos d ON ST_Intersects(b.the_geom, d.the_geom) = TRUE GROUP BY d.cartodb_id ) c WHERE a.cartodb_id = c.counts_id ORDER BY a.nombre', {}) | |
.done(function(data) { | |
// add the rows as menus | |
data.rows.forEach(function(d){ | |
$('#menu').append('<a href="#centro" id="carto_' + d.cartodb_id + '" class="button">' + d.nombre + '</a> ') | |
}) | |
// add interactivity to the buttons | |
$('.button').click(function() { | |
$('.button').removeClass('selected'); | |
// Get the district ID | |
var district_id = $(this).attr('id').split('_')[1]; | |
if (district_id == currentId){ | |
// If it's the same Id, use the original SQL | |
sublayer.setSQL(firstSQL); | |
sql.getBounds(firstSQL).done(function(bounds){ | |
map.fitBounds(bounds); | |
}) | |
} else { | |
// Move to that id | |
currentId = district_id; | |
// Change button styles | |
$(this).addClass('selected'); | |
// Change the sublayer SQL | |
sublayer.setSQL(SQLTemplate.replace('{{id}}',district_id)); | |
// Zoom to the bounds | |
sql.getBounds(SQLTemplate,{id:district_id}).done(function(bounds) { | |
map.fitBounds(bounds); | |
}); | |
} | |
}); | |
}) | |
.error(function(errors) { | |
// errors contains a list of errors | |
console.log("errors:" + errors); | |
}); | |
} | |
$(document).ready(function() { | |
init(); | |
}); | |
</script> | |
</body> | |
</html> |
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