[Octave-bug-tracker] [bug #58216] bar: stacked bar chart improperly handles negative values

[Rik]

Follow-up Comment #15, bug #58216 (project octave):

@Nicholas: I think that is an excellent idea.  Most of the graphics functions
have %!demo blocks for testing which requires a human to do visual inspection
to see if they look right.  This is tedious.

This is such a big project though that I think you should add it to the
projects list (https://wiki.octave.org/Projects).  See the Test subsection. 
Also, maybe mention something about it on Discourse in case there is some more
useful input from other developers.

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