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How far can you bike in 5,10,15 min? Mapbox Isochrone Example https://www.mapbox.com/api-documentation/#isochrone
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset='utf-8' /> | |
| <title>Add a isochrone</title> | |
| <meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' /> | |
| <script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.49.0/mapbox-gl.js'></script> | |
| <link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.49.0/mapbox-gl.css' rel='stylesheet' /> | |
| <style> | |
| body { margin:0; padding:0; } | |
| #map { position:absolute; top:0; bottom:0; width:100%; } | |
| </style> | |
| </head> | |
| <body> | |
| <div id='map'></div> | |
| <div id='instructions'></div> | |
| <script> | |
| mapboxgl.accessToken = 'pk.eyJ1IjoiZ3JhZmEiLCJhIjoiY2lvZjU0NnRqMDB0cnVwbTM3MmZjeGxxZiJ9.HG76QROZVWnTf9jQ9ZKWDw'; | |
| var map = new mapboxgl.Map({ | |
| container: 'map', // container id | |
| style: 'mapbox://styles/mapbox/streets-v10', //stylesheet location | |
| center: [-122.66206798535438,45.52363989427619], // starting position | |
| zoom: 12, // starting zoom | |
| }); | |
| // initialize the map canvas to interact with later | |
| var canvas = map.getCanvasContainer(); | |
| // create a function to make a isochrone request | |
| function getFence(loc) { | |
| // make directions request using cycling profile | |
| var url = 'https://api.mapbox.com/isochrone/v1/mapbox/cycling/' + loc + '?contours_minutes=5,10,15&contours_colors=1084a8,1084a8,1084a8&polygons=true&access_token=' + mapboxgl.accessToken; | |
| // make an XHR request https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest | |
| var req = new XMLHttpRequest(); | |
| req.responseType = 'json'; | |
| req.open('GET', url, true); | |
| req.onload = function() { | |
| var data = req.response.features; | |
| console.log(data); | |
| data.forEach(contour => { | |
| console.log(contour); | |
| // if the poly already exists on the map, we'll reset it using setData | |
| let cp = contour.properties; | |
| var layerID = 'fence' + cp.contour; | |
| if (map.getSource('fence' + cp.contour)) { | |
| map.getSource('fence'+ cp.contour).setData(contour); | |
| } | |
| // otherwise, we'll make a new request | |
| else { | |
| map.addLayer({ | |
| "id": layerID, | |
| "type": "fill", | |
| "source": { | |
| "type": "geojson", | |
| "data": contour | |
| }, | |
| "layout": { | |
| }, | |
| "paint": { | |
| "fill-color": cp.fillColor, | |
| "fill-opacity": cp.fillOpacity | |
| } | |
| }, 'water'); | |
| }; | |
| }); | |
| }; | |
| req.send(); | |
| }; | |
| map.on('load', function(){ | |
| // Add destination to the map | |
| map.addLayer({ | |
| "id": "point", | |
| "type": "circle", | |
| "source": { | |
| "type": "geojson", | |
| "data": { | |
| "type": "FeatureCollection", | |
| "features": [{ | |
| "type": "Feature", | |
| "properties": {}, | |
| "geometry": { | |
| "type": "Point", | |
| "coordinates": [-122.66206798535438,45.52363989427619] | |
| } | |
| }] | |
| } | |
| }, | |
| "paint": { | |
| "circle-radius": 10, | |
| "circle-color": "#f30" | |
| } | |
| }); | |
| // allow the user to click the map to change the destination | |
| map.on('click', function(e) { | |
| var coordsObj = e.lngLat; | |
| canvas.style.cursor = ''; | |
| var coords = Object.keys(coordsObj).map(function (key) { return coordsObj[key]; }); | |
| var end = { | |
| "type": "FeatureCollection", | |
| "features": [{ | |
| "type": "Feature", | |
| "properties": {}, | |
| "geometry": { | |
| "type": "Point", | |
| "coordinates": coords | |
| } | |
| }] | |
| }; | |
| if (map.getLayer('point')) { | |
| map.getSource('point').setData(end); | |
| } else { | |
| map.addLayer({ | |
| "id": "point", | |
| "type": "circle", | |
| "source": { | |
| "type": "geojson", | |
| "data": { | |
| "type": "FeatureCollection", | |
| "features": [{ | |
| "type": "Feature", | |
| "properties": {}, | |
| "geometry": { | |
| "type": "Point", | |
| "coordinates": coords | |
| } | |
| }] | |
| } | |
| }, | |
| "paint": { | |
| "circle-radius": 10, | |
| "circle-color": "#f30" | |
| } | |
| }); | |
| }; | |
| getFence(coords); | |
| }); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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