Style lines with a data-driven property
Create a visualization with a data expression for line-color
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<!DOCTYPE html><html><head><meta charset="utf-8" /><title>Style lines with a data-driven property</title><meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" /><script src="https://unpkg.com/trackasia-gl@1.0.5/dist/trackasia-gl.js"></script><link href="https://unpkg.com/trackasia-gl@1.0.5/dist/trackasia-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><script>var map = new trackasiagl.Map({container: 'map',style: 'https://maps.track-asia.com/styles/v1/streets.json?key=public_key',center: {"lat":10.762622,"lng":106.660172},zoom: 16}); map.on('load', function () {map.addSource('lines', {'type': 'geojson','data': {'type': 'FeatureCollection','features': [{'type': 'Feature','properties': {'color': '#F7455D' // red},'geometry': {'type': 'LineString','coordinates': [[106.658398,10.764238],[106.658967,10.764311],[106.659041,10.764573],[106.659674,10.764642],[106.659883,10.763972],[106.65984,10.76383],[106.657645,10.762629],[106.657092,10.763493]]}},{'type': 'Feature','properties': {'color': '#33C9EB' // blue},'geometry': {'type': 'LineString','coordinates': [[106.66015,10.764536],[106.660312,10.764083],[106.659914,10.763872],[106.660216,10.762903],[106.663366,10.763609],[106.663387,10.763503],[106.663704,10.763356],[106.663769,10.763277],[106.663801,10.763198],[106.663806,10.763124],[106.663806,10.763071],[106.663785,10.763029],[106.66372,10.762903],[106.66386,10.762824]]}}]}});map.addLayer({'id': 'lines','type': 'line','source': 'lines','paint': {'line-width': 3,// Use a get expression (https://docs.track-asia.com/style/expressions/#get)// to set the line-color to a feature property value.'line-color': ['get', 'color']}});});</script> </body></html>