[Octave-bug-tracker] [bug #47974] Visual differences between gnuplot and OpenGL toolkits

[Rik]

Follow-up Comment #37, bug #47974 (project octave):

@Dan: The 'unset view' line is there to allow the pcolor plot to be rotated. 
pcolor is a 3-D surface, but the view is set to [0, 90] to create a 2-d
looking plot.  With the OpenGL toolkits, and I'm pretty sure with Matlab, one
can then rotate the plot and have it assume a 3-D form.

Before removing that ability, can you check whether Matlab allows rotation of
pcolor plots?  If you have access to Matlab that would be great, but otherwise
just ask on the Maintainer's list for a little help.  If we don't have to meet
a compatibility goal then I would just eliminate this code.

The cset which made the change was back in 2007 by David Bateman.  To see it,
try


hlog -p -r 7271


If we should be keeping this ability then perhaps we should 'unset view' only
when the plot is a pcolor one.  We could probably determine this by checking
that viewmap was set and that the axis view was [0, 90].

Is the second mesh patch in comment #35 independent of this pcolor issue
(aside from performance) so that could be applied now?


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