详细介绍C# 利用IRawPixels接口遍历栅格数据的代码实例

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);    

  }

}