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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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