| Because the problem has been solved, the Code is now organized for everyone. Image Data cropping I am referring to the scrsgjh post (vb code), original post address http://bbs.esrichina-bj.cn/ESRI/viewthread.php?
Tid = 4152 & highlight = % B6 % E0 % B1 % DF % D0 % CE % 2 Bscrsgjh // Crop images
IGeometry clipGeo = axMapControl1.TrackPolygon ();//
ILayer layer = axMapControl1.get _ Layer (I); // The image layer to crop
IRasterLayer pRasterLayer = layer as IRasterLayer;
IRaster pRaster = pRasterLayer. Raster;
IRasterProps pProps = pRaster as IRasterProps;
Object cellSizeProvider = pProps. MeanCellSize (). X;
IGeoDataset pInputDataset = pRaster as IGeoDataset;
IExtractionOp pExtractionOp = new RasterExtractionOpClass ();
IRasterAnalysisEnvironment pRasterAnaEnvir = pExtractionOp as IRasterAnalysisEnvironment;
PRasterAnaEnvir. SetCellSize (esriRasterEnvSettingEnum. esriRasterEnvValue, ref cellSizeProvider );
Object extentProvider = clipGeo. Envelope;
Object snapRasterData = Type. Missing;
PRasterAnaEnvir. SetExtent (esriRasterEnvSettingEnum. esriRasterEnvValue, ref extentProvider, ref snapRasterData );
IGeoDataset pOutputDataset = pExtractionOp. Polygon (pInputDataset, clipGeo as ipolympus Gon, true );
IRaster clipRaster; // IRaster obtained after Cropping
If (pOutputDataset is IRasterLayer)
{
IRasterLayer rasterLayer = pOutputDataset as IRasterLayer;
ClipRaster = rasterLayer. Raster;
}
Else if (pOutputDataset is IRasterDataset)
{
IRasterDataset rasterDataset = pOutputDataset as IRasterDataset;
ClipRaster = rasterDataset. CreateDefaultRaster ();
}
Else if (pOutputDataset is IRaster)
{
ClipRaster = pOutputDataset as IRaster;
}
Else
{
Return;
} // Save the clipRaster after cropping. // If the image is saved as an img Image File
IWorkspaceFactory pWKSF = new RasterWorkspaceFactoryClass ();
IWorkspace pWorkspace = pWKSF. OpenFromFile (@ "C: \ temp", 0 );
ISaveAs pSaveAs = clipRaster as ISaveAs;
PSaveAs. SaveAs ("test. img", pWorkspace, "IMAGINE Image "); // If it is stored in mdb
IRasterStorageDef pRasterStorageDef = new RasterStorageDefClass ();
PRasterStorageDef. CompressionType = esriRasterCompressionType. esrirastercompression2000;
PRasterStorageDef. CompressionQuality = 50;
PRasterStorageDef. TileHeight = 128;
PRasterStorageDef. TileWidth = 128;
IWorkspaceFactory pWKSF = new AccessWorkspaceFactoryClass ();
IWorkspace pWorkspace = pWKSF. OpenFromFile (@ "C: \ temp \ test. mdb", 0 );
ISaveAs2 pSaveAs = clipRaster as ISaveAs2;
PSaveAs. SaveAsRasterDataset ("test", pWorkspace, "gdb", pRasterStorageDef ); // You can also use the IRasterWorkspaceEx SaveAsRasterDataset method to save the data to mdb.
IWorkspaceFactory pWKSF = new AccessWorkspaceFactoryClass ();
IWorkspace pWorkspace = pWKSF. OpenFromFile (@ "C: \ temp \ test. mdb", 0 );
IRasterWorkspaceEx pRasterWKS = pWorkspace as IRasterWorkspaceEx;
IRasterStorageDef pRasterStorageDef = new RasterStorageDefClass ();
PRasterStorageDef. CompressionType = esriRasterCompressionType. esrirastercompression2000;
PRasterStorageDef. CompressionQuality = 50;
PRasterStorageDef. PyramidLevel = 2;
PRasterStorageDef. PyramidResampleType = rstResamplingTypes. RSP_BilinearInterpolation;
PRasterStorageDef. TileHeight = 128;
PRasterStorageDef. TileWidth = 128;
IRasterDef pRasterDef = new RasterDefClass ();
PRasterDef. Description = "rasterdataset ";
PRasterDef. SpatialReference = axMapControl1.SpatialReference;
IGeometryDef pGeoDef = new GeometryDefClass ();
IGeometryDefEdit pGeoDefEdit = pGeoDef as IGeometryDefEdit;
PGeoDefEdit. GeometryType_2 = esriGeometryType. esriGeometryPolygon;
PGeoDefEdit. AvgNumPoints_2 = 4;
PGeoDefEdit. GridCount_2 = 1;
PGeoDefEdit. set_GridSize (0, 1000 );
PGeoDefEdit. SpatialReference_2 = axMapControl1.SpatialReference;
IRasterDataset pRasterDataset = pRasterWKS. SaveAsRasterDataset ("test", clipRaster, pRasterStorageDef, "", pRasterDef,
PGeoDef );
// You do not need to set the parameters:
IRasterDataset pRasterDataset = pRasterWKS. SaveAsRasterDataset ("test", clipRaster, null, "", null, null ); |
