MapboxGL choropleth

forked from almccon's block: MapboxGL choropleth

forked from mfincker's block: MapboxGL choropleth

<!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/v0.40.0/mapbox-gl.js'></script>
    <link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.40.0/mapbox-gl.css' rel='stylesheet' />
    <style>
        body { margin:0; padding:0; }
        #map { position:absolute; top:0; bottom:0; width:100%; }
    </style>
</head>
<body>

<style>

.legend {
    background-color: #fff;
    border-radius: 3px;
    bottom: 30px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.10);
    font: 12px/20px 'Helvetica Neue', Arial, Helvetica, sans-serif;
    padding: 10px;
    position: absolute;
    right: 10px;
    z-index: 1;
}

.legend h4 {
    margin: 0 0 10px;
}

.legend div span {
    border-radius: 50%;
    display: inline-block;
    height: 10px;
    margin-right: 5px;
    width: 10px;
}

</style>

<div id='state-legend' class='legend'>
    <h4>Population</h4>
    <div><span style='background-color: #723122'></span>25,000,000</div>
    <div><span style='background-color: #8B4225'></span>10,000,000</div>
    <div><span style='background-color: #A25626'></span>7,500,000</div>
    <div><span style='background-color: #B86B25'></span>5,000,000</div>
    <div><span style='background-color: #CA8323'></span>2,500,000</div>
    <div><span style='background-color: #DA9C20'></span>1,000,000</div>
    <div><span style='background-color: #E6B71E'></span>750,000</div>
    <div><span style='background-color: #EED322'></span>500,000</div>
    <div><span style='background-color: #F2F12D'></span>0</div>
</div>

<div id='county-legend' class='legend' style='display: none;'>
    <h4>Population</h4>
    <div><span style='background-color: #723122'></span>1,000,000</div>
    <div><span style='background-color: #8B4225'></span>500,000</div>
    <div><span style='background-color: #A25626'></span>100,000</div>
    <div><span style='background-color: #B86B25'></span>50,000</div>
    <div><span style='background-color: #CA8323'></span>10,000</div>
    <div><span style='background-color: #DA9C20'></span>5,000</div>
    <div><span style='background-color: #E6B71E'></span>1,000</div>
    <div><span style='background-color: #EED322'></span>100</div>
    <div><span style='background-color: #F2F12D'></span>0</div>
</div>

// var zoomThreshold = 4;

map.on('load', function() {

map.addSource('county_geo_data', {
        'type': 'vector',
        'url': 'mapbox://stamen.cccc8kgi'
    });
  
     map.addSource('tract_geo_data', {
        'type': 'vector',
        'url': 'mapbox://stamen.42zqg3sk'
    });
  
       map.addSource('block_geo_data', {
        'type': 'vector',
        'url': 'mapbox://stamen.0ujdjkh2'
    });

map.addLayer({
        'id': 'state-population',
        'source': 'county_geo_data',
        'source-layer': 'county_geo_data',
      	'maxZoom': 9,
        'type': 'fill',
        'paint': {
            'fill-color': {
                property: 'poverty_rate',
                stops: [
                    [0, '#F2F12D'],
                    [0.1, '#EED322'],
                    [0.2, '#E6B71E'],
                    [0.3, '#DA9C20'],
                    [0.4, '#CA8323']
                ]
            },
            'fill-opacity': 0.75
        }
    }, 'waterway-label');
  
  
   map.addLayer({
        'id': 'tract',
        'source': 'tract_geo_data',
        'source-layer': 'tract_geo_data',
      	'maxZoom': 12,
        'type': 'fill',
        'paint': {
            'fill-color': {
                property: 'poverty_rate',
                stops: [
                    [0, '#F2F12D'],
                    [0.1, '#EED322'],
                    [0.2, '#E6B71E'],
                    [0.3, '#DA9C20'],
                    [0.4, '#CA8323']
                ]
            },
            'fill-opacity': 0.75
        }
    }, 'waterway-label');

map.addLayer({
        'id': 'block',
        'source': 'block_geo_data',
        'source-layer': 'block_geo_data',
    'minZoom': 10, 
      	'maxZoom': 12,
        'type': 'fill',
        'paint': {
            'fill-color': {
                property: 'poverty_rate',
                stops: [
                    [0, '#F2F12D'],
                    [0.1, '#EED322'],
                    [0.2, '#E6B71E'],
                    [0.3, '#DA9C20'],
                    [0.4, '#CA8323']
                ]
            },
            'fill-opacity': 0.75
        }
    }, 'waterway-label');

//     map.addLayer({
//         'id': 'county-population',
//         'source': 'population',
//         'source-layer': 'state_county_population_2014_cen',
//         'minzoom': zoomThreshold,
//         'type': 'fill',
//         'filter': ['==', 'isCounty', true],
//         'paint': {
//             'fill-color': {
//                 property: 'population',
//                 stops: [
//                     [0, '#F2F12D'],
//                     [100, '#EED322'],
//                     [1000, '#E6B71E'],
//                     [5000, '#DA9C20'],
//                     [10000, '#CA8323'],
//                     [50000, '#B86B25'],
//                     [100000, '#A25626'],
//                     [500000, '#8B4225'],
//                     [1000000, '#723122']
//                 ]
//             },
//             'fill-opacity': 0.75
//         }
//     }, 'waterway-label');

});

// var stateLegendEl = document.getElementById('state-legend');
// var countyLegendEl = document.getElementById('county-legend');
// map.on('zoom', function() {
//     if (map.getZoom() > zoomThreshold) {
//         stateLegendEl.style.display = 'none';
//         countyLegendEl.style.display = 'block';
//     } else {
//         stateLegendEl.style.display = 'block';
//         countyLegendEl.style.display = 'none';
//     }
// });

</script>

</body>
</html>

https://api.tiles.mapbox.com/mapbox-gl-js/v0.40.0/mapbox-gl.js