AE traversal raster to implement reclassification of the raster (C # implementation)

There are many methods for reclassifying raster data. AE can be implemented in multiple ways, either by map algebra (implemented in RasterModel), IReclassOp, or Geoprocessor, it can even be implemented by traversing the raster. This is the most primitive method, but it may also be the most practical. The original raster Traversal method is used here. [Csharp] private void reclass (IRaster pRaster, float weight) {IRasterProps rasterProps = (IRasterProps) pRaster; // set the grid data starting point IPnt pBlockSize = new Pnt (); pBlockSize. setCoords (rasterProps. width, rasterProps. height); // select the entire range IPixelBlock pPixelBlock = pRaster. createPixelBlock (pBlockSize); // the upper left coordinate IPnt tlp = new Pnt (); tlp. setCoords (0, 0); // read The raster IRasterBandCollection pRasterBands = pRaster as IRaster BandCollection; IRasterBand pRasterBand = pRasterBands. item (0); IRawPixels pRawRixels = pRasterBands. item (0) as IRawPixels; pRawRixels. read (tlp, pPixelBlock); // sets the PixBlock value to an array System. array pSafeArray = pPixelBlock. get_SafeArray (0) as System. array; for (int y = 0; y <rasterProps. height; y ++) {for (int x = 0; x <rasterProps. width; x ++) {// int value = Convert. toInt32 (pSafeArray. getValue (x, y )); Byte value = Convert. ToByte (pSafeArray. GetValue (x, y); if (value! = 0) {pSafeArray. setValue (Byte) (value * weight), x, y) ;}} pPixelBlock. set_SafeArray (0, pSafeArray); // edit raster to write the updated value to IRasterEdit rasterEdit = pRaster as IRasterEdit; rasterEdit. write (tlp, pPixelBlock); rasterEdit. refresh ();}