WMTSLayer
这个示例显示了如何添加 WMTS 图层到地图。
WMTSLayer 用于创建基于 OGC 的网络地图切片服务(Web Map TIle Service,WMTS)。通常来说,WMTS 服务充当了 WMTS 图层的目录,可以用 activeLayer 指定图层(某则默认为第一个子图层)。WMTSLayer 最开始会执行 WMTS getCapabilities 请求,该请求可能需要跨域。
数据说明:示例程序使用了由 NASA/GSFC/ESDIS 运营的 GIBS 提供的影像。
程序完整源代码:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
<title>WMTSLayer - 4.5</title>
<link rel="stylesheet" href="https://js.arcgis.com/4.5/esri/css/main.css">
<style>
html,
body,
#viewDiv {
padding: 0;
margin: 0;
height: 100%;
width: 100%;
}
.esri-layer-list {
width: 310px;
}
</style>
<script src="https://js.arcgis.com/4.5/"></script>
<script>
var map, view;
require([
"esri/config",
"esri/Map",
"esri/views/MapView",
"esri/layers/WMTSLayer",
"esri/widgets/LayerList",
"dojo/domReady!"
], function(esriConfig , Map , MapView , WMTSLayer, LayerList ) {
esriConfig.request.corsEnabledServers.push(
"https://gibs.earthdata.nasa.gov");
layer = new WMTSLayer({
url: "https://gibs.earthdata.nasa.gov/wmts/epsg4326/best",
copyright: "<a target='_top' href='https://earthdata.nasa.gov'>Earthdata</a> by <a target='_top' href='https://www.nasa.gov'>NASA</a>",
activeLayer: {
id: "SRTM_Color_Index",
}
});
map = new Map({
layers: [layer]
});
view = new MapView({
container: "viewDiv",
map: map
});
view.then(function() {
view.extent = layer.fullExtent;
// 添加图层列表
var layerList = new LayerList({
view: view
});
view.ui.add(layerList, "bottom-left");
});
});
</script>
</head>
<body>
<div id="viewDiv"></div>
</body>
</html>
程序运行效果:
沙箱地址:https://developers.arcgis.com/javascript/latest/sample-code/sandbox/index.html?sample=layers-wmts
(完)