获取并修改图层投影坐标系

yimiXY

于 2021-11-12 15:08:32 发布

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分类专栏： C# arcEngine devepress 文章标签：矩阵几何学算法

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//获取已知原始坐标系
IFeatureClass yFeatureClass=null;
ISpatialReference pSpatialRef = (yFeatureClass as IGeoDataset).SpatialReference;

//修改现在要素的坐标系，继承原坐标系
IFeatureClass  xFeatureClass=null;
IGeoDataset pGeoDataset =xFeatureClass as IGeoDataset;
IGeoDatasetSchemaEdit pGeoDatasetSchemaEdit = pGeoDataset as IGeoDatasetSchemaEdit;
//空间坐标系可改变
if (pGeoDatasetSchemaEdit.CanAlterSpatialReference == true)
 {
      创建SpatialReferenceEnvironmentClass对象
      //ISpatialReferenceFactory2 pSpaRefFactory = new SpatialReferenceEnvironmentClass();
      创建地理坐标系对象
      //IGeographicCoordinateSystem pNewGeoSys = pSpaRefFactory.CreateGeographicCoordinateSystem((int)esriSRGeoCSType.esriSRGeoCS_WGS1984);//4214代表Beijing1954;
      //pGeoDatasetSchemaEdit.AlterSpatialReference(pNewGeoSys);
      pGeoDatasetSchemaEdit.AlterSpatialReference(pSpatialRef);
}