On Tue, Jan 4, 2011 at 4:55 PM, kwayeke <bigvision82 at yahoo.com> wrote: > > ImageData->SetDimensions(254,254,384); > ImageData->SetWholeExtent(0,299,0,299,0,384); Try with dimensions set to (256,256,384) and the whole extent set to (0,255,0,255,0,383) - David