ArcGIS Pro 3.3 API Reference Guide
ArcGIS.Core.Geometry Namespace / SpatialReferences Class / WebMercator Property
Example

In This Topic
    WebMercator Property
    In This Topic
    Gets a Web Mercator (WKID = 3857) spatial reference object.
    Syntax
    public static SpatialReference WebMercator {get;}
    Public Shared ReadOnly Property WebMercator As SpatialReference
    Example
    Import and Export Geometries to well-known Text
    // create a point with z, m
    MapPoint point = MapPointBuilderEx.CreateMapPoint(
             100, 200, 300, 400, SpatialReferences.WebMercator);
    
    // set the flags
    WktExportFlags wktExportFlags = WktExportFlags.WktExportDefaults;
    WktImportFlags wktImportFlags = WktImportFlags.WktImportDefaults;
    
    // export and import
    string wktString = GeometryEngine.Instance.ExportToWKT(wktExportFlags, point);
    MapPoint importPoint = GeometryEngine.Instance.ImportFromWKT(
          wktImportFlags, wktString, SpatialReferences.WebMercator) as MapPoint;
    
    double x = importPoint.X;       // x = 100
    double y = importPoint.Y;       // y = 200
    bool hasZ = importPoint.HasZ;   // hasZ = true
    double z = importPoint.Z;       // z = 300
    bool hasM = importPoint.HasM;   // hasM = true
    double m = importPoint.M;       // m = 400
    
    // export without z
    WktExportFlags exportFlagsNoZ = WktExportFlags.WktExportStripZs;
    wktString = GeometryEngine.Instance.ExportToWKT(exportFlagsNoZ, point);
    importPoint = GeometryEngine.Instance.ImportFromWKT(
      wktImportFlags, wktString, SpatialReferences.WebMercator) as MapPoint;
    
    x = importPoint.X;        // x = 100
    y = importPoint.Y;        // y = 200
    hasZ = importPoint.HasZ;  // hasZ = false
    z = importPoint.Z;        // z = 0
    hasM = importPoint.HasM;  // hasM = true
    m = importPoint.M;        // m = 400
    
    // export without m
    WktExportFlags exportFlagsNoM = WktExportFlags.WktExportStripMs;
    wktString = GeometryEngine.Instance.ExportToWKT(exportFlagsNoM, point);
    importPoint = GeometryEngine.Instance.ImportFromWKT(
      wktImportFlags, wktString, SpatialReferences.WebMercator) as MapPoint;
    
    x = importPoint.X;        // x = 100
    y = importPoint.Y;        // y = 200
    hasZ = importPoint.HasZ;  // hasZ = true
    z = importPoint.Z;        // z = 300
    hasM = importPoint.HasM;  // hasM = false
    m = importPoint.M;        // m = Nan
    
    // export without z, m
    wktString = GeometryEngine.Instance.ExportToWKT(
      exportFlagsNoZ | exportFlagsNoM, point);
    importPoint = GeometryEngine.Instance.ImportFromWKT(
      wktImportFlags, wktString, SpatialReferences.WebMercator) as MapPoint;
    
    x = importPoint.X;        // x = 100
    y = importPoint.Y;        // y = 200
    hasZ = importPoint.HasZ;  // hasZ = false
    z = importPoint.Z;        // z = 0
    hasM = importPoint.HasM;  // hasM = false
    m = importPoint.M;        // m = Nan
    
    Project from WGS84 to WebMercator
    MapPoint pt = MapPointBuilderEx.CreateMapPoint(1.0, 3.0, SpatialReferences.WGS84);
    Geometry result = GeometryEngine.Instance.Project(pt, SpatialReferences.WebMercator);
    MapPoint projectedPt = result as MapPoint;
    Requirements

    Target Platforms: Windows 11, Windows 10

    ArcGIS Pro version: 3 or higher.
    See Also