[Octave-bug-tracker] [bug #34041] mesh and meshc stop displaying z-axis after one script execution

[Charles]

Follow-up Comment #1, bug #34041 (project octave):

Further comments on what appears to be causing this bug:

The actual plot by gnuplot appears to be o.k., but the problem is that the
perspective of the mesh and meshc images start defaulting to a "top" (2D)
view. When "colorbar" is used in the figure, this locks the view to whatever
the default state is for gnuplot.

So what's actually happening for me is when I run the test script submitted
here, mesh and meshc work fine, regardless of the number of times I run the
script. But when I run a more complicated version of the same script that
plots the results of 3 different functions on the same mesh or meshc, the view
defaults to a top-level perspective in gnuplot and then won't revert back even
when I run this simpler test script again. Only if I run something else, like
sombrero.m, then the perspective defaults back to 3D next time I run the test
script attached here.

If I remove the colorbar command from the plot, then I can grab the image with
my mouse cursor and rotate it to the correct view. The plot itself is fine.

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