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