Detailed introduction to C# code examples for traversing raster data using the IRawPixels interface

This article mainly introduces the use of IRawPixels interface to traverse raster data. It has a very good reference value. Let’s take a look at it with the editor.

The version of AO is 10.2, and the development language is C#. The raster data source is the IRasterDataset interface.

IRasterBandCollection pRasterBandCollection = pRasterDataset as IRasterBandCollection;
IRasterBand pRasterBand = pRasterBandCollection.Item(0);
 IRaster pRaster = (pRasterDataset as IRasterDataset2).CreateFullRaster();
IRawPixels pRawPixels = pRasterBand as IRawPixels;
IRasterProps pRasterProps = pRasterBand as IRasterProps;
int dHeight = pRasterProps.Height;
int dWidth = pRasterProps.Width; 
IPnt pntSize = new PntClass();
pntSize.SetCoords(dHeight, dWidth);
IPnt pPixelBlockOrigin = new PntClass();
pPixelBlockOrigin.SetCoords(0, 0);
IPixelBlock pixelBlock = pRaster.CreatePixelBlock(pntSize);
pRawPixels.Read(pPixelBlockOrigin, pixelBlock);
System.Array arr = (System.Array)(pixelBlock as IPixelBlock3).get_PixelData(0);
for (int i = 0; i < dHeight;i++ ) 
{
 for (int j = 0; j < dWidth; j++) 
 {
   float number = 0;
   float.TryParse(arr.GetValue(i,j).ToString(),out number);     
  }
}

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