地图的一些配置信息及demo

本文介绍如何使用ArcGIS API进行地图初始化,添加不同类型的图层,包括点、线、面,并实现图层的清除操作。通过具体代码示例,展示了如何利用JavaScript和ArcGIS API在Web应用中实现地图服务的调用与图形要素的绘制。
Title
<link rel="stylesheet" href="https://js.arcgis.com/3.27/esri/css/esri.css">
<script src="https://js.arcgis.com/3.27/"></script>
<style>
    html, body, #map {
        height: 100%;
        width: 100%;
    }

    body {
        background-color: #fff;
        overflow: hidden;
    }

    #BasemapToggle {
        position: absolute;
        right: 20px;
        top: 20px;
        z-index: 50;
    }

    #HomeButton {
        left: 25px;
        position: absolute;
        top: 93px;
        z-index: 50;
    }

    #LocateButton {
        left: 25px;
        position: absolute;
        top: 130px;
        z-index: 50;
    }
</style>
<script>
    var map;
    var graphicsLayer;
    //引入基础类包,具体看官方API
    require([
            "esri/basemaps",
            "esri/map",
            "esri/layers/ArcGISDynamicMapServiceLayer",
            "dojo/domReady!"],
        function (esriBasemaps, Map,ArcGISDynamicMapServiceLayer) {
        esriBasemaps.delorme = {
            baseMapLayers: [`在这里插入代码片`
                //中国矢量地图服务
                { url: "http://**.***.***:8888/OneMapServer/rest/services/base-map-image-globe/MapServer"},
            ],
            //缩略图
            thumbnailUrl: "Imgs/shiliang.jpg",
            title: "矢量图"
        };
        //初始化地图
        map = new Map("map", {
            basemap: "delorme",
            center: [103,34],
            zoom:2
        });
        var url = "http://**.***.***在这里插入代码片/OneMapServer/rest/services/ipms-map-zbhj-zb/MapServer";
        var layer = new ArcGISDynamicMapServiceLayer(url);
        layer.setImageFormat("PNG24");
        map.addLayer(layer);
        //创建客户端图层
        graphicsLayer=new esri.layers.GraphicsLayer();
    });
    function deleteLayer() {
        graphicsLayer.clear();
        alert("删除图层")
    }
    function fii(type) {
    //定义线符号
    var lineSymbol=new esri.symbol.SimpleLineSymbol(esri.symbol.SimpleLineSymbol.STYLE_SOLID, new dojo.Color([255, 0, 0]), 3);
    //定义点符号
    var pSymbol=new esri.symbol.SimpleMarkerSymbol(esri.symbol.SimpleMarkerSymbol.STYLE_CIRCLE,20, lineSymbol, new dojo.Color([255, 0, 0]));
    //定义面符号
    var fill= esri.symbol.SimpleFillSymbol(esri.symbol.SimpleFillSymbol.STYLE_SOLID, lineSymbol,  new dojo.Color([255, 0, 0]));
    //声明一个类型和图形
    var geometry;
    var graphic;
    //根据文本定义相应的geometry
    switch(type) {
        case "添加点":
            geometry=new esri.geometry.Point({
                "x":89.223,
                "y":35.785,
                "spatialReference":map.spatialReference
            });
            graphic=new esri.Graphic(geometry,pSymbol);
            break;
        case "添加线":
            //点的坐标对
            var  paths=[];
            paths[0]=[
                [89.223,35.785],
                [105.855,31.145],
                [107.854,38.283],
                [113.279,32.572],
            ];
            geometry=new esri.geometry.Polyline({
                "paths":paths,
                "spatialReference":map.spatialReference
            })
            graphic=new esri.Graphic(geometry,lineSymbol);
            break;
        case "添加面":
            //点的坐标对
            var ring=[];
            ring[0]=[
                [89.223,35.785],
                [105.855,31.145],
                [107.854,38.283],
                [113.279,32.572],
            ];
            geometry=new esri.geometry.Polygon({
                "rings":ring,
                "spatialReference":map.spatialReference
            });
            graphic=new esri.Graphic(geometry,fill);
            break;
    }
    //将图形添加到图层中
    console.log(graphic)
    graphicsLayer.add(graphic);

    //将客户端图层添加到地图中
     map.addLayer(graphicsLayer);
    };


</script>
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