GIS足迹

ArcGIS engine9.2提供了一种更为便捷的加载批量分幅raster数据的方法:raster catalog.用户现在arccatalog里创建一个raster catalog,把需要加载的raster数据导入该catalog.在程序中,编写相应代码,就可以将一幅幅的数据加载到地图上,不用事先拼接,相当方便.

实现加载raster catalog的代码如下:

private void AddRasterCatalog()

{
            try
            {
                IWorkspace pWs = Open_Workspace();   //获取raster catalog所在工作空间

                if (pWs == null)
                {
                    MessageBox.Show("数据库连接错误！", "提示", MessageBoxButtons.OK);
                    return;
                }
                IRasterWorkspaceEx pRaterWs = (IRasterWorkspaceEx) pWs;
                IRasterCatalog pRasterCatalog = pRaterWs.OpenRasterCatalog("RasterCatalogName");                
                IFeatureWorkspace pFtWs = (IFeatureWorkspace)pWs;
               
                ITable t = pFtWs.OpenTable("RasterCatalogName");
                IGdbRasterCatalogLayer gdbRasterCatalogLayer = new GdbRasterCatalogLayerClass();
               gdbRasterCatalogLayer.Setup(t);

               this.axMapControl1.Map.AddLayer(gdbRasterCatalogLayer as ILayer);
               
                this.axMapControl1.ActiveView.Refresh();
                
            }
            catch (Exception ex)
            {

             }

}