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September 12, 2020 04:27
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Using deck.gl with Mapbox GL JS (Method 1): Deck canvas overlay
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| <html> | |
| <head> | |
| <title>deck.gl ScatterplotLayer Example</title> | |
| <script src="https://d3js.org/d3.v5.min.js" type="text/javascript"></script> | |
| <script src="https://unpkg.com/deck.gl@latest/dist.min.js"></script> | |
| <script src="https://api.mapbox.com/mapbox-gl-js/v1.12.0/mapbox-gl.js"></script> | |
| <link href="https://api.mapbox.com/mapbox-gl-js/v1.12.0/mapbox-gl.css" rel="stylesheet" /> | |
| <style type="text/css"> | |
| body { | |
| width: 100vw; | |
| height: 100vh; | |
| margin: 0; | |
| position: relative; | |
| } | |
| .panel { | |
| background-color: white; | |
| opacity: 0.7; | |
| position: absolute; | |
| top: 0; | |
| left: 0; | |
| z-index: 1; | |
| } | |
| #tooltip { | |
| position: absolute; | |
| top: 0; | |
| left: 0; | |
| z-index: 2; | |
| background-color: white; | |
| visibility: visible; | |
| padding: 5px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div class='panel'> | |
| <input type="radio" id="satellite" name="map_style" value="satellite"> | |
| <label for="satellite">Satellite</label><br> | |
| <input type="radio" id="street" name="map_style" value="street"> | |
| <label for="street">Street</label><br> | |
| <input type="radio" id="dark" name="map_style" value="dark"> | |
| <label for="dark">Dark</label><br> | |
| </div> | |
| <div id='map'></div> | |
| <div id='tooltip'><div> | |
| </body> | |
| <script type="text/javascript"> | |
| const {DeckGL, ScatterplotLayer, HeatmapLayer} = deck; | |
| d3.json("data.json").then(function(data){ | |
| function initHeatmapLayer(){ | |
| return new HeatmapLayer({ | |
| data, | |
| id: 'heatmap-layer', | |
| getPosition: d => { | |
| //console.log([+d.lat, +d.lon]) | |
| return [+d.lon, +d.lat] }, | |
| getWeight: 1, | |
| colorRange: [[1, 152, 189, 255], [73, 227, 206, 255], [216, 254, 181, 255], [254, 237, 177, 255],[254, 173, 84, 255],[209, 55, 78, 255]], | |
| radiusPixels: 20, | |
| intensity: 1.2, | |
| threshold: 0.03 | |
| }) | |
| } | |
| function initScatterLayer(){ | |
| return new ScatterplotLayer({ | |
| id: 'scatter-plot', | |
| data, | |
| getPosition: d => [+d.lon, +d.lat], | |
| getFillColor: [1, 152, 189, 255], | |
| //getRadius: 500, | |
| radiusScale: 1, | |
| radiusMaxPixels: 10, | |
| radiusMinPixels: 5, | |
| opacity: 0.5, | |
| pickable: true, | |
| //onHover: info => showTooltip(info), | |
| onClick: info => showTooltip(info) | |
| }) | |
| } | |
| const token = 'pk.eyJ1IjoiZGlhbmFtZW93IiwiYSI6ImNqcmh4aWJnOTIxemI0NXA0MHYydGwzdm0ifQ.9HakB25m0HLT-uDY2yat7A' | |
| const deckgl = new DeckGL({ | |
| mapboxApiAccessToken: token, | |
| mapStyle: 'mapbox://styles/mapbox/dark-v9', | |
| initialViewState: { | |
| container: 'map', | |
| longitude: 103.84, | |
| latitude: 1.35, | |
| zoom: 11, | |
| pitch: 0, | |
| bearing: 0, | |
| renderWorldCopies: 1 | |
| }, | |
| controller: true, | |
| layers: [ | |
| initHeatmapLayer() | |
| ], | |
| onViewStateChange: ({viewState}) => { | |
| d3.select('#tooltip').style('visibility', 'hidden') | |
| if(viewState.zoom > 14){ | |
| deckgl.setProps({layers: [initScatterLayer()]}); | |
| } else { | |
| deckgl.setProps({layers: [initHeatmapLayer()]}); | |
| } | |
| }, | |
| // built-in tooltips show on hover | |
| //getTooltip: ({object}) => object && { | |
| //html: `<h2>${object[2]}</h2>`, | |
| //style: { | |
| //backgroundColor: '#fff', | |
| //fontSize: '0.8em' | |
| //} | |
| //} | |
| }); | |
| function showTooltip(info){ | |
| d3.select('#tooltip') | |
| .style('top', info.y) | |
| .style('left', info.x) | |
| .style('visibility', 'visible') | |
| .html(`<p>${info.object.town}</p><p>${info.object.address}</p>`) | |
| } | |
| document.querySelector("#satellite").addEventListener('click',function (){ | |
| deckgl.setProps({mapboxApiAccessToken: token, mapStyle: 'mapbox://styles/mapbox/satellite-v9'}); | |
| }) | |
| document.querySelector("#street").addEventListener('click',function (){ | |
| deckgl.setProps({mapboxApiAccessToken: token, mapStyle: 'mapbox://styles/mapbox/streets-v11'}); | |
| }) | |
| document.querySelector("#dark").addEventListener('click',function (){ | |
| deckgl.setProps({mapboxApiAccessToken: token, mapStyle: 'mapbox://styles/mapbox/dark-v9'}); | |
| }) | |
| }) | |
| </script> | |
| </html> |
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