[Gdal-dev] pabydata declaration in GDALRasterBand::ReadBlock documentation

[Tim Sutton]

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Hi

I have been going through the documentation & examples in 
GDALRasterBand::ReadBlock and am wondering what the declaration for pabyData 
is? It is used in the example but never declared (see below).

Many thanks


 CPLErr GetHistogram( GDALRasterBand *poBand, int *panHistogram )

 {
     int        nXBlocks, nYBlocks, nXBlockSize, nYBlockSize;
     int        iXBlock, iYBlock;

     memset( panHistogram, 0, sizeof(int) * 256 );

     CPLAssert( poBand->GetRasterDataType() == GDT_Byte );

     poBand->GetBlockSize( &nXBlockSize, &nYBlockSize );
     nXBlocks = (poBand->GetXSize() + nXBlockSize - 1) / nXBlockSize;
     nYBlocks = (poBand->GetYSize() + nYBlockSize - 1) / nYBlockSize;

     pabyData = (GByte *) CPLMalloc(nXBlockSize * nYBlockSize);


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example continues...


Regards

Tim Sutton

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