使用ArcGis Api For Javascript将长坐标和纬度坐标转换为X-Y坐标

该方法用于将地理坐标系经纬度(wkid 4326)转换为投影坐标系Web Mercator(wkid 102100)。

默认esri地图使用Web Mercator作为投影系统。如果需要将坐标转换为其他坐标系,则需要使用 project GeometryService方法: https://developers.arcgis.com/javascript/3/jsapi/geometryservice-amd.html

例子:

require(["esri/geometry/Point", "esri/tasks/GeometryService", "esri/tasks/ProjectParameters", "esri/SpatialReference", "dojo/domReady!"],
  function(Point, GeometryService, ProjectParameters, SpatialReference) {

    var outSR = "YOUR_OUTPUT_COORDINATE_SYSTEM"; // `wkid {number}`
    var geometryService = new GeometryService("https://utility.arcgisonline.com/ArcGIS/rest/services/Geometry/GeometryServer");
    var inputpoint = new Point({
      longitude: "YOUR_LONGITUDE_INPUT",
      latitude: "YOUR_LATITUDE_INPUT"
    });

    var projectParams = new ProjectParameters();
    projectParams.geometries = [inputpoint];
    projectParams.outSR = new SpatialReference({ wkid: outSR });

    geometryService.project(projectParams, (result) => {
      let outputpoint = result[0]; // outputpoint first element of result array
      console.log("Result x:", outputpoint.x, "y :", outputpoint.y);
    });
  });

Wkid编号可在此处找到:

• 投影坐标系: http://resources.arcgis.com/en/help/arcgis-rest-api/index.html#/Projected_coordinate_systems/02r3000000vt000000/

• 地理坐标系: http://resources.arcgis.com/en/help/arcgis-rest-api/index.html#/Geographic_coordinate_systems/02r300000105000000/

编辑

下面是一个工作示例: Plunker