[Octave-bug-tracker] [bug #47223] imshow showed upside down img

[Mike Miller]

Update of bug #47223 (project octave):

                Category:         Octave Function => Plotting with gnuplot  
                Priority:              5 - Normal => 3 - Low                
                  Status:            Works For Me => Duplicate              
                 Release:                   4.0.0 => 4.0.2                  
        Operating System:                  Mac OS => Any                    

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Follow-up Comment #6:

Thanks for the sample image. I can confirm this bug with Octave 4.0.x, but not
with the default branch, this has been fixed in the meantime.

Here is a minimal reproducer for this bug in Octave 4.0.x, with graphics
toolkit gnuplot, and gnuplot version 5:


graphics_toolkit ("gnuplot");
figure ();
axis ();
set (gca, "ydir", "reverse");


So this actually turns out to be the same as bug #38914, which is about
exactly this error with gnuplot version 5. I can't say whether this can be
fixed on stable or not, or whether it's worth it, but you could try applying
the fix to your Octave build if this is important to you (see
http://hg.savannah.gnu.org/hgweb/octave/rev/977853866d69, it's all m-files),
or use one of the OpenGL toolkits if possible (I know Apple makes this
difficult).

Any other developers want to look at whether this can/should be fixed on the
stable branch, if there will even be another stable release? If no response,
then this will be closed as a duplicate.

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  <http://savannah.gnu.org/bugs/?47223>

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