Dear Yan On 27/07/13 15:27, Yan Grange wrote:
I'm kind of new to Veusz but already quite impressed by it. I have an issue with the colour bars (or it may just be my misunderstanding of the interpretation). When I plot an image logarithmically and add a colorbar to show what the colours mean in terms of counts, the colorbar essentially scales between 0 and 1. If I plot the same data linearly, the colorbar ranges from 0 to 300 (which is indeed the largest number of counts in the image). For some reason it seems like the image data are normalised before taking the logarithm.
I'm surprised that the numbers change when switching from linear to log. If I load the mandelbrot.vsz example and change the scaling on the image widget between linear and log, it appears to show the same range of values on the colorbar (the real values, not logged).
I had to change the minimum value in the image widget to be >0 for the logging to work correctly, however.
Are you changing the scale in some other way? I see the colorbar has its own log setting, but this appears to be read-only (I probably should hide it).
If it's still broken, please can you send an example file (without data if it is too big)?
Best wishes Jeremy _______________________________________________ Veusz-discuss mailing list [email protected] https://mail.gna.org/listinfo/veusz-discuss
