[bug #68150] xlabel with pie chart refuses to be Visible

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Follow-up Comment #1, bug #68150 (group octave):

I can confirm this bug exists as reported.
Root Cause:

In __pie__.m (the internal function called by pie.m), when creating a 2D pie
chart, the axes are configured with:

if (strcmp (caller, "pie"))
    axis (h, [-1.5, 1.5, -1.5, 1.5], "square", "off");
endif

The "off" parameter in the axis() command completely disables the axes
visibility, including all axes children like xlabel, ylabel, and title. 

Interim measure:
Until this is fixed, users can work around the issue by

set(gca, "visible", "on")

 to enable axes.


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