kuanb/index.html

## index.html
<!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/v0.38.0/mapbox-gl.js'></script>
    <link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.38.0/mapbox-gl.css' rel='stylesheet' />
    <style>
        body { margin:0; padding:0; }
        #map { position:absolute; top:0; bottom:0; width:100%; }
    </style>
</head>
<body>
<style>
    .mapboxgl-popup {
        max-width: 400px;
        font: 12px/20px 'Helvetica Neue', Arial, Helvetica, sans-serif;
    }
</style>
<div id='map'></div>
<script>
mapboxgl.accessToken = 'pk.eyJ1Ijoia3VhbmIiLCJhIjoidXdWUVZ2USJ9.qNKXXP6z9_fKA8qrmpOi6Q';
var map = new mapboxgl.Map({
    container: 'map',
    style: 'mapbox://styles/mapbox/satellite-v9',
    zoom: 10,
    center: [-122.139610, 37.801202]
});

map.on('load', function () {
    map.addLayer({
        'id': 'int_densities',
        'type': 'fill',
        'source': {
            type: 'geojson',
            data: geojson
        },
        'paint': {
            // data-driven style for line color
            'fill-outline-color': '#550000',
            'fill-color': {
                property: 'fill',
                type: 'identity'
            },
            'fill-opacity': 0.65,
        }
    });
});

map.on('click', 'int_densities', function (e) {
    new mapboxgl.Popup()
        .setLngLat(e.features[0].geometry.coordinates[0][0])
        .setHTML(e.features[0].properties.intersection_density + ' intersections per sq. mile')
        .addTo(map);
});

// Change the cursor to a pointer when the mouse is over the places layer.
map.on('mouseenter', 'int_densities', function () {
    map.getCanvas().style.cursor = 'pointer';
});

// Change it back to a pointer when it leaves.
map.on('mouseleave', 'int_densities', function () {
    map.getCanvas().style.cursor = '';
});

// Line geometry
var geojson = {"type": "FeatureCollection", "features": [{"type": "Feature", "properties": {"stroke": "#550000", "stroke-width": 0.25, "stroke-opacity": 0.25, "fill": "rgb(255,200,0)", "fill-opacity": 0.75, "intersection_density": 105.57700000000001}, "geometry": {"type": "Polygon", "coordinates": [[[-122.124886, 37.751635], [-122.12476, 37.751712999999995], [-122.124617, 37.751619], [-122.124607, 37.751613], [-122.12443, 37.751509999999996], [-122.12416400000001, 37.751377999999995], [-122.124139, 37.751366], [-122.12401, 37.751307], [-122.124141, 37.751208999999996], [-122.124304, 37.751281999999996], [-122.124496, 37.751382], [-122.124886, 37.751635]]]}}, {"type": "Feature", "properties": {"stroke": "#550000", "stroke-width": 0.25, "stroke-opacity": 0.25, "fill": "rgb(255,151,0)", "fill-opacity": 0.75, "intersection_density": 198.608}, "geometry": {"type": "Polygon", "coordinates": [[[-122.210245, 37.770097], [-122.210139, 37.770184], [-122.210057, 37.770146], [-122.209811, 37.770033999999995], [-122.20973000000001, 37.769997], [-122.209799, 37.769898], [-122.210245, 37.770097]]]}}, {"type": "Feature", "properties": {"stroke": "#550000", "stroke-width": 0.25, "stroke-opacity": 0.25, "fill": "rgb(255,139,0)", "fill-opacity": 0.75, "intersection_density": 221.541}, "geometry": {"type": "Polygon", "coordinates": [[[-122.18212, 37.794933], [-122.181836, 37.794577], [-122.18172200000001, 37.794444999999996], [-122.181686, 37.794379], [-122.181667, 37.794328], [-122.181664, 37.794291], [-122.181667, 37.794245], [-122.181681, 37.794187], [-122.181798, 37.794036999999996], [-122.181946, 37.794259], [-122.182301, 37.79483], [-122.18252, 37.795168], [-122.182791, 37.795541], [-122.183022, 37.795848], [-122.183641, 37.796647], [-122.184129, 37.797264], [-122.184234, 37.797402], [-122.184642, 37.797934], [-122.18481299999999, 37.79814], [-122.184997, 37.798401999999996], [-122.184826, 37.798234], [-122.18417, 37.79747], [-122.184021, 37.797295999999996], [-122.183956, 37.797239], [-122.183919, 37.797218], [-122.183815, 37.797179], [-122.183761, 37.797171], [-122.18367599999999, 37.797169], [-122.18359699999999, 37.797174], [-122.183472, 37.797208999999995], [-122.183416, 37.797241], [-122.18337700000001, 37.797277], [-122.183341, 37.797322], [-122.183307, 37.797379], [-122.183296, 37.797416], [-122.183277, 37.797531], [-122.183287, 37.797616999999995], [-122.183219, 37.797529999999995], [-122.183117, 37.797374], [-122.18294399999999, 37.796966], [-122.18301, 37.796892], [-122.183064, 37.796849], [-122.183123, 37.796794], [-122.183125, 37.796793], [-122.18319, 37.796715999999996], [-122.183238, 37.796631999999995], [-122.18325899999999, 37.796518], [-122.18325, 37.796423], [-122.183244, 37.79638], [-122.183211, 37.796289], [-122.183185, 37.796244], [-122.183112, 37.796146], [-122.183097, 37.79613], [-122.182927, 37.79595], [-122.182837, 37.795846], [-122.182789, 37.795792], [-122.182579, 37.795527], [-122.182495, 37.79542], [-122.18212, 37.794933]]]}}, {"type": "Feature", "properties": {"stroke": "#550000", "stroke-width": 0.25, "stroke-opacity": 0.25, "fill": "rgb(255,197,0)", "fill-opacity": 0.75, "intersection_density": 112.066}, "geometry": {"type": "Polygon", "coordinates": [[[-122.27004, 37.833991], [-122.27012500000001, 37.834005], [-122.270089, 37.834143999999995], [-122.269983, 37.834564], [-122.269949, 37.834703999999995], [-122.269908, 37.834702], [-122.269864, 37.834693], [-122.27004, 37.833991]]]}}, {"type": "Feature", "properties": {"stroke": "#550000", "stroke-width": 0.25, "stroke-opacity": 0.25, "fill": "rgb(255,212,0)", "fill-opacity": 0.75, "intersection_density": 82.914}, "geometry": {"type": "Polygon", "coordinates": [[[-122.227202, 37.778303], [-122.227263, 37.778241], [-122.227405, 37.778302], [-122.227366, 37.778380999999996], [-122.227202, 37.778303]]]}}, {"type": "Feature", "properties": {"stroke": "#550000", "stroke-width": 0.25, "stroke-opacity": 0.25, "fill": "rgb(255,158,0)", "fill-opacity": 0.75, "intersection_density": 185.915}, "geometry": {"type": "Polygon", "coordinates": [[[-122.253954, 37.802530999999995], [-122.254126, 37.802332], [-122.254207, 37.80222], [-122.254297, 37.802078], [-122.254344, 37.801946], [-122.254367, 37.801836], [-122.254384, 37.801725], [-122.254385, 37.801612999999996], [-122.254378, 37.801457], [-122.254323, 37.801162], [-122.254291, 37.801031], [-122.25429, 37.800895], [-122.25430399999999, 37.800785], [-122.254325, 37.800668], [-122.254351, 37.800567], [-122.254505, 37.800560999999995], [-122.254457, 37.800686999999996], [-122.254419, 37.800912], [-122.254428, 37.801027], [-122.254445, 37.801156], [-122.254467, 37.801446], [-122.254475, 37.801612999999996], [-122.254468, 37.801838], [-122.254446, 37.801949], [-122.254422, 37.802020999999996], [-122.254377, 37.802115], [-122.254288, 37.802254], [-122.254207, 37.802364], [-122.254073, 37.802521], [-122.253954, 37.802530999999995]]]}}, {"type": "Feature", "properties": 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