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Are you sure this isn't because the pixel coordinates are in the opposite direction to the world coordinates? Tim On Feb 13, 2008 8:02 AM, Colin Aspin <[log in to unmask]> wrote: > Hi All, > > I'm using gaia and some datacubes (HARP-B and UIST IFU) and I've seen > strange behaviour for both when using the "Spectrum" tab. If I click > on the image and extract a spectrum and then click the "Show limits > on plot" button, I get the orange limit lines on the plot fine. > However, if I drag the extremes to the location I want (towards the > center) I can extract a new spectrum OK but the limits shown in > pixels on the window are the wrong way around, the lower limit has > the higher number and the higher limit has the lower number. If I > then use the slidebars to move the limits I have to move the lower- > limit slidebar away from the center to get the limit lines to move > towards the center and visa-versa for the upper slidebar. I am > using humu but this was also the case with puana and whatever came > before (just never bothered to report it). See attached screen grab > for evidence where the lower-limit says 86 and the upper limit says 70. > > colin > >