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@ajzeigert
Created November 12, 2015 21:21
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Data-driven wind bouy markers in Mapbox GL JS
<!DOCTYPE html>
<html>
<head>
<meta charset='utf-8' />
<title>METAR stations</title>
<meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
<script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.11.1/mapbox-gl.js'></script>
<link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.11.1/mapbox-gl.css' rel='stylesheet' />
<script src="//code.jquery.com/jquery-1.11.3.min.js"></script>
<script src="http://cdn-geoweb.s3.amazonaws.com/terraformer/1.0.4/terraformer.min.js"></script>
<script src="http://cdn-geoweb.s3.amazonaws.com/terraformer-arcgis-parser/1.0.4/terraformer-arcgis-parser.min.js"></script>
<!-- <script src="featureservice-master/dist/featureservice.min.js"></script>-->
<!-- <script src='colorbrewer.js'></script>-->
<style>
html, body {
font-family: sans-serif;
padding: 0;
margin: 0;
}
#map {
width: 100vw;
height: 100vh;
}
</style>
</head>
<body>
<div id="map"></div>
<script>
// Smartmine mapbox token
mapboxgl.accessToken = 'pk.eyJ1Ijoic21hcnRtaW5lIiwiYSI6Imt6TUp0cEEifQ.9MrwD6GRlEGj9OTNN-bsRw';
// Smartmine map style
var geodark = 'mapbox://styles/smartmine/cigdv27lk00029hkt6leqc9yz';
// Fire up the map
var map = new mapboxgl.Map({
container: 'map', // container id
style: geodark, //stylesheet location
center: [-93, 41], // starting position
zoom: 3, // starting zoom
hash: true
});
// Add a new basic controller
map.addControl(new mapboxgl.Navigation({position: 'top-left'}));
// After the map style loads, do this stuff
map.on('style.load', function() {
var envelope = map.getBounds();
var sw = envelope.getSouthWest();
var ne = envelope.getNorthEast();
var requestUrl = 'http://tmservices1.esri.com/arcgis/rest/services/LiveFeeds/NOAA_METAR_current_wind_speed_direction/MapServer/1/query?where=objectId%3E%3D0&text=&objectIds=&time=&geometry=' + sw.lng + ',' + sw.lat + ',' + ne.lng + ',' + ne.lat + '&geometryType=esriGeometryEnvelope&inSR=4326&spatialRel=esriSpatialRelEnvelopeIntersects&relationParam=&outFields=*&returnGeometry=true&maxAllowableOffset=&geometryPrecision=&outSR=4326&returnIdsOnly=false&returnCountOnly=false&orderByFields=&groupByFieldsForStatistics=&outStatistics=&returnZ=false&returnM=false&gdbVersion=&returnDistinctValues=false&f=json';
console.log(requestUrl);
// This is the big one, grabs the ESRI data, converts to geojson, loads a layer for each feature, styled to order
$.ajax({
url: requestUrl,
dataType: 'json'})
.done(function(windresponse){
console.log(windresponse);
var FeatureCollection = {
type: "FeatureCollection",
features: []
}
for(var i = 0; i < windresponse.features.length; i++){
var feature = Terraformer.ArcGIS.parse(windresponse.features[i]);
feature.id = i;
FeatureCollection.features.push(feature);
}
console.log(FeatureCollection);
var source = new mapboxgl.GeoJSONSource({
data: FeatureCollection
})
// Add the newly created geojson as a source
map.addSource('wind', source);
// Function to translate wind speed to proper text size
var windSize = function(feature){
var a = feature.properties.WIND_SPEED
if (a > 0 && a <= 11 ) {
return 16;
}
else if (a > 11 && a <= 20) {
return 18;
}
else if (a > 20 && a <= 28) {
return 20;
}
else if (a > 28 && a <= 39) {
return 22;
}
else if (a > 39 && a <= 94) {
return 24;
}
else {
return 0;
}
}
// Function to translate wind speed to proper text color
var windColor = function(feature){
var a = feature.properties.WIND_SPEED
if (a > 0 && a <= 11 ) {
return 'rgb(191, 184, 64)';
}
else if (a > 11 && a <= 20) {
return 'rgb(242, 203, 103)';
}
else if (a > 20 && a <= 28) {
return 'rgb(237, 162, 62)';
}
else if (a > 28 && a <= 39) {
return 'rgb(219, 94, 49)';
}
else if (a > 39 && a <= 94) {
return 'rgb(168, 0, 0)';
}
else {
return 'rgb(255,255,255)';
}
}
// Build an array of layers for each features
var windLayers = [];
// Build a layer for each feature and push it into the empty array
var i;
for (i = 0; i < FeatureCollection.features.length; i++) {
var layer = {
"id": 'wind' + i,
"type": 'symbol',
"source": 'wind',
"layout": {
"text-field": FeatureCollection.features[i].properties.WIND_SPEED > 0 ? 'E' : '5',
"text-font": ['ESRI Dimensioning Regular'],
"text-rotate": FeatureCollection.features[i].properties.WIND_DIRECT,
"text-rotation-alignment": 'map',
"text-size": windSize(FeatureCollection.features[i])
},
"paint": {
"text-color": windColor(FeatureCollection.features[i])
},
"filter": ['==', 'OBJECTID', FeatureCollection.features[i].properties.OBJECTID]
};
windLayers.push(layer);
}
map.batch(function(batch){
var i;
for (i = 0; i < windLayers.length; i++) {
batch.addLayer(windLayers[i])
}
})
console.log(windLayers.length)
}); // End of esri call
}); // End mapbox on load function
</script>
</body>
</html>
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