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Custom layer - WMS
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Description
At version 2.1 of the ArcGIS API for JavaScript a new class esri.layers.WMSLayerwas added to the API. This sample shows how to create a custom layer using WMS as an example.Thissample creates a simple dynamic layer using a WMS endpoint. To use this layer, the code creates a map and adds a tiled layer from ArcGIS Online, then places the newly created WMS layer on top.
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>WMS</title>
<link rel="stylesheet" href="https://js.arcgis.com/3.29/dijit/themes/claro/claro.css">
<link rel="stylesheet" href="https://js.arcgis.com/3.29/esri/css/esri.css">
<script src="https://js.arcgis.com/3.29/"></script>
<script>
dojo.require("esri.map");
var map;
dojo.ready(function() {
dojo.declare("my.CityStatesRiversUSAWMSLayer", esri.layers.DynamicMapServiceLayer, {
constructor: function() {
this.initialExtent = this.fullExtent = new esri.geometry.Extent({"xmin":-16476154.32,"ymin":2504688.54,"xmax":-6457400.14,"ymax":7514065.62,"spatialReference":{"wkid":102100}});
this.spatialReference = new esri.SpatialReference({wkid:102100});
this.loaded = true;
this.onLoad(this);
},
getImageUrl: function(extent, width, height, callback) {
var params = {
request: "GetMap",
transparent: true,
format: "image/png",
bgcolor: "ffffff",
version: "1.1.1",
layers: "0,1",
styles: "default,default",
exceptions: "application/vnd.ogc.se_xml",
//changing values
bbox:extent.xmin + "," + extent.ymin + "," + extent.xmax + "," + extent.ymax,
srs: "EPSG:" + extent.spatialReference.wkid,
width: width,
height: height
};
callback("https://sampleserver1.arcgisonline.com/arcgis/services/Specialty/ESRI_StatesCitiesRivers_USA/MapServer/WMSServer?" + dojo.objectToQuery(params));
}
});
});
function init() {
map = new esri.Map("map", {
basemap: "satellite",
center: [-103.008, 40.98],
zoom: 4
});
map.addLayer(new my.CityStatesRiversUSAWMSLayer());
}
dojo.ready(init);
</script>
</head>
<body class="claro">
<div id="map" style="position:relative; width:1024px; height:512px; border:2px solid #000;"></div>
</body>
</html>