AE设置投影而非重投影IGeoDatasetSchemaEdit

 AE设置投影而非重投影

读取一个jpg格式的影像，包含jgw文件，这时设置投影。赋值操作。

1 IRasterDataset raster = rasterWsp.OpenRasterDataset(FileName); 2 //AE设置投影为WebMercator投影

3 IGeoDatasetSchemaEdit schemeEdit = raster as IGeoDatasetSchemaEdit; 4  if (schemeEdit.CanAlterSpatialReference) 5 { 6  schemeEdit.AlterSpatialReference(webMercator); 7 }

 构建webMercator投影：

 1  //创建WGS84辅助球Web墨卡托投影

 2         public ISpatialReference CreateWebMector()  3  {  4             // 实例化SpatialReferenceEnvironment.SpatialReferenceEnvironment

 5             Type factoryType = Type.GetTypeFromProgID("esriGeometry.SpatialReferenceEnvironment");  6             System.Object obj = Activator.CreateInstance(factoryType);  7             ISpatialReferenceFactory3 mSpatialReferenceFactory3 = obj as ISpatialReferenceFactory3;  8             ISpatialReference projSpatialReference = mSpatialReferenceFactory3.CreateProjectedCoordinateSystem((int)esriSRProjCS3Type.esriSRProjCS_WGS1984WebMercatorMajorAuxSphere);//基于WGS84的WebMercator  9             //esriSRProjCS2Type.esriSRProjCS_WGS1984WorldMercator); 10             //esriSRProjCS3Type.esriSRProjCS_WGS1984WebMercatorMajorAuxSphere); 11             //esriSRProjCS2Type.esriSRProjCS_WGS1984SphereWebMercator

12             return projSpatialReference; 13         }

CreateWebMector