Hello, I have a point ROI and want to export the values at those points to an ASCII file from multiple 30-band images. It works fine for most files, except those that have no data (NAN) at the ROI location in the first band (even when there are values in the other bands). The output ASCII file indicates the NAN bands correctly in that case but for the bands where there should be values it only shows asteriks. When spectrally subsetting the bands to export, thereby having a band with a value at the ROI as the first band, everything works again. All the input files have the same projection and images have exact same dimensions, pixel resolution, projection, etc. Is this some glitch in the software or am I missing something here? Mike