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Proportional symbols for lines
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Description
Create proportional symbols by having the line width be based on the data values of the features.
Code
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no">
<title>Proportional Symbols on Road Traffic</title>
<link rel="stylesheet" href="https://js.arcgis.com/3.46/esri/css/esri.css">
<style>
html, body, #map {
height: 100%;
width: 100%;
margin: 0;
padding: 0;
}
body {
background-color: #FFF;
overflow: hidden;
font-family: "Trebuchet MS";
}
</style>
<script src="https://js.arcgis.com/3.46/"></script>
<script>
var map;
require([
"esri/map", "esri/layers/FeatureLayer", "esri/InfoTemplate",
"dojo/domReady!"
], function(
Map, FeatureLayer, InfoTemplate
){
map = new Map("map", {
basemap: "gray-vector",
center: [-84.63,30.37],
zoom: 9
});
var template = new InfoTemplate("Florida Annual Average Traffic Count", "Traffic Count: <b>${AADT}</b><br>From: <b>${DESC_FRM}</b><br>To: <b>${DESC_TO}</b>");
var layer = new FeatureLayer("https://services.arcgis.com/V6ZHFr6zdgNZuVG0/arcgis/rest/services/Florida_Annual_Average_Daily_Traffic/FeatureServer/0", {
mode: FeatureLayer.MODE_ONDEMAND,
outFields:["AADT", "DESC_FRM", "DESC_TO"],
infoTemplate:template,
minScale:1155581.108577
});
var sizeInfo = {
field:"AADT",
minSize:1,
maxSize:10,
minDataValue:1000,
maxDataValue:100000
};
layer.on("load", function() {
layer.renderer.setSizeInfo(sizeInfo);
layer.copyright = "Florida Department of Transportation, Transportation Statistics Office (TRANSTAT)";
});
map.addLayers([layer]);
});
</script>
</head>
<body>
<div id="map"></div>
</body>
</html>