Created
September 22, 2015 21:56
Data driven style example with Mapbox GL
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset='utf-8' /> | |
| <title></title> | |
| <meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' /> | |
| <script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.11.0/mapbox-gl.js'></script> | |
| <link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.11.0/mapbox-gl.css' rel='stylesheet' /> | |
| <style> | |
| body { margin:0; padding:0; } | |
| #color-map { position:absolute; top:0; bottom:0; width:100%; } | |
| </style> | |
| </head> | |
| <body> | |
| <div id='color-map'></div> | |
| <script> | |
| mapboxgl.accessToken = 'pk.eyJ1IjoiZGV2c2VlZCIsImEiOiJnUi1mbkVvIn0.018aLhX0Mb0tdtaT2QNe2Q'; | |
| var choroStyle = { | |
| version: 8, | |
| name: 'Basic', | |
| sources: { | |
| 'us-counties': { | |
| 'type': 'vector', | |
| 'url': 'mapbox://devseed.us-counties' | |
| } | |
| }, | |
| sprite: '', | |
| glyphs: '', | |
| layers: [{ | |
| id: 'background', | |
| type: 'background', | |
| paint: { 'background-color': '#000' } | |
| }] | |
| } | |
| var breaks = [0, 4, 16, 64, 256, 1024, 4096, 16384, 65536] | |
| for (var p = 0; p < breaks.length; p++) { | |
| var filters | |
| if (p < breaks.length - 1) { | |
| filters = [ 'all', | |
| [ '>=', 'pop_density', breaks[p] ], | |
| [ '<', 'pop_density', breaks[p + 1] ] | |
| ] | |
| } else { | |
| filters = [ 'all', | |
| [ '>=', 'pop_density', breaks[p] ] | |
| ] | |
| } | |
| choroStyle.layers.push({ | |
| id: 'counties-pop-' + p, | |
| type: 'fill', | |
| source: 'us-counties', | |
| 'source-layer': 'counties', | |
| paint: { | |
| 'fill-color': '#5b6b6b', | |
| 'fill-opacity': (p + 1) / breaks.length | |
| }, | |
| filter: filters | |
| }) | |
| } | |
| var choro = new mapboxgl.Map({ | |
| container: 'color-map', | |
| style: choroStyle, | |
| center: [-90, 38.5], | |
| zoom: 3 // starting zoom | |
| }) | |
| </script> | |
| </body> | |
| </html> | |
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