[gdal-dev] Transposing image data using RasterIO

[Paul Mallas]

Hello,

I am trying to transpose image data (i.e., swap lines and columns) and 
am struggling to make it work properly. I think this should be possible 
through RasterIO, but so far no luck.  Any suggestions?

My approach so far has been like this, with image nXsize by nYsize:

void *pData = VSIMalloc2(nXSize, (GDALGetDataTypeSize(eType) / 8));

for (int iLine = 0; iLine < nYSize; iLine++) {

    // Read in row (line)
    eErr = poSrcBand->RasterIO(GF_Read, 0, iLine, nXSize, 1, pData,
					nXSize, 1, eType, 0,0);

   // Now I want to write a column, nothing I tried here has worked
    eErr = poDstBand->RasterIO(GF_Write, .......



}