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@maptastik
Last active Mar 22, 2018
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Tangram Choropleth: Final
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>TangramJS - Mixing with raster tiles</title>
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
<link rel="stylesheet" href="https://unpkg.com/leaflet@1.0.3/dist/leaflet.css" />
<style>
body {
margin: 0;
padding: 0;
}
#map {
position: absolute;
top: 0;
bottom: 0;
width: 100%;
}
</style>
</head>
<body>
<div id="map"></div>
<script src="https://unpkg.com/leaflet@1.0.3/dist/leaflet.js"></script>
<script src="https://unpkg.com/tangram/dist/tangram.min.js"></script>
<script>
var kentucky = [37.857507, -85.632935]
var map = L.map('map', {
center: kentucky,
zoom: 7,
});
var layer = Tangram.leafletLayer({
scene: 'scene.yaml'
}).addTo(map);
// ADD LABELS TO CUSTOM PANE
map.createPane('labels');
map.getPane('labels').style.zIndex = 650;
var labels = L.tileLayer('http://{s}.basemaps.cartocdn.com/light_only_labels/{z}/{x}/{y}.png', {
attribution: '&copy; <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a> &copy; <a href="http://cartodb.com/attributions">CartoDB</a>',
subdomains: 'abcd',
pane: 'labels',
maxZoom: 19
}).addTo(map);
</script>
</body>
</html>
sources:
counties:
type: GeoJSON
url: https://gist.githubusercontent.com/maptastik/df8e483d5ac1c6cae3dc4a7c02ea9039/raw/9cd46849bddcfa90aab240772a12275408d6d8d0/kyCounties.geojson
carto_nolabel:
type: Raster
url: http://a.basemaps.cartocdn.com/light_nolabels/{z}/{x}/{y}.png
styles:
_alpha_polygons:
base: polygons
blend: multiply
layers:
basemap:
data: {source: carto_nolabel}
draw:
raster:
order: 0
counties:
data: {source: counties}
draw:
lines:
color: '#000000'
width: 1px
order: 1
polygons:
style: _alpha_polygons
order: 1
color: |
function() {
var cat = feature.CH00_10;
var color = cat >= 5 ? '#2196F3' :
cat < 5 && cat >= 1 ? '#90CAF9':
cat < 1 && cat > -1 ? '#FFFDE7':
cat <= -1 && cat > -5 ? '#ef9a9a':
cat <= -5 ? '#f44336':
'#000'
return color;
}
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