Created
November 8, 2016 19:26
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Filtering in Mapbox GL JS
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset='utf-8' /> | |
| <title></title> | |
| <link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.26.0/mapbox-gl.css' rel='stylesheet' /> | |
| <link href='https://www.mapbox.com/base/latest/base.css' rel='stylesheet' /> | |
| <link href='site.css' rel='stylesheet' /> | |
| </head> | |
| <body> | |
| <div id='map' class='map' /> | |
| <div class='pin-topleft pad1 z1'> | |
| <div id='sidebar' class='sidebar round' /> | |
| </div> | |
| <script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.26.0/mapbox-gl.js'></script> | |
| <script src='site.js'></script> | |
| </body> | |
| </html> |
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| body { margin:0; padding:0; } | |
| .map { | |
| position:absolute; | |
| top:0; | |
| bottom:0; | |
| width:100%; | |
| } | |
| .sidebar { | |
| width:120px; | |
| } | |
| .sidebar > div:first-child button { | |
| border-radius:3px 3px 0 0; | |
| } | |
| .sidebar > div:last-child button { | |
| border-radius:0 0 3px 3px; | |
| } | |
| /* Dark attribution */ | |
| .mapboxgl-ctrl.mapboxgl-ctrl-attrib { background-color:rgba(0,0,0,0.5); } | |
| .mapboxgl-ctrl.mapboxgl-ctrl-attrib a { color:#fff; } |
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| 'use strict'; | |
| /* global mapboxgl */ | |
| mapboxgl.accessToken = 'pk.eyJ1IjoidHJpc3RlbiIsImEiOiJiUzBYOEJzIn0.VyXs9qNWgTfABLzSI3YcrQ'; | |
| var sidebar = document.getElementById('sidebar'); | |
| var ethnicities = [{ | |
| group: 'Asian', | |
| hex: '#3bb2d0' | |
| }, { | |
| group: 'Black', | |
| hex: '#888BCA' | |
| }, { | |
| group: 'Hispanic', | |
| hex: '#e55e5e' | |
| }, { | |
| group: 'White', | |
| hex: '#fbb03b' | |
| }, { | |
| group: 'Other', | |
| hex: '#ccc' | |
| }]; | |
| var map = new mapboxgl.Map({ | |
| container: 'map', | |
| style: 'mapbox://styles/mapbox/dark-v9', | |
| zoom: 12, | |
| center: [-122.447303, 37.753574] | |
| }); | |
| ethnicities.map(function(d) { | |
| d.active = true; | |
| var item = document.createElement('div'); | |
| item.className = 'dark'; | |
| var toggle = document.createElement('button'); | |
| toggle.className = 'button col12 icon check unround'; | |
| toggle.textContent = d.group; | |
| toggle.style.backgroundColor = d.hex; | |
| toggle.addEventListener('click', function() { | |
| d.active = d.active ? false : true; | |
| if (d.active) { | |
| toggle.style.backgroundColor = d.hex; | |
| toggle.classList.add('check', 'icon'); | |
| } else { | |
| toggle.classList.remove('check', 'icon'); | |
| toggle.style.backgroundColor = 'rgba(255,255,255,0.1)'; | |
| } | |
| map.setFilter('population', ethnicities.filter(function(d) { | |
| return d.active; | |
| }).reduce(function(memo, d) { | |
| memo.push(d.group); | |
| return memo; | |
| }, ['in', 'ethnicity']) | |
| ); | |
| }); | |
| item.appendChild(toggle); | |
| sidebar.appendChild(item); | |
| return d; | |
| }); | |
| map.on('load', function() { | |
| map.addSource('population', { | |
| type: 'vector', | |
| url: 'mapbox://examples.8fgz4egr' | |
| }); | |
| map.addLayer({ | |
| 'id': 'population', | |
| 'type': 'circle', | |
| 'source': 'population', | |
| 'source-layer': 'sf2010', | |
| 'paint': { | |
| 'circle-radius': { | |
| 'base': 1.75, | |
| 'stops': [[12, 2], [22, 180]] | |
| }, | |
| 'circle-color': { | |
| property: 'ethnicity', | |
| type: 'categorical', | |
| stops: ethnicities.map(function(d) { | |
| return [d.group, d.hex]; | |
| }) | |
| } | |
| } | |
| }, 'water-label'); | |
| }); |
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