[Octave-bug-tracker] [bug #64956] 'color' isn't a supported property of a contour group but... it should. Or doc should be more explicit

[Pantxo Diribarne]

Follow-up Comment #1, bug #64956 (project octave):

According to ML doc, "linecolor", which Octave uses, is now discouraged in
favor of "edgecolor". So, rather than adding the undocumented property "color"
(probably a relic of old ML syntax that they well could forbid without warning
in a future version), Octave should introduce the official "edgecolor"
property in order to make ML code, written against documented properties, run
fine in Octave as well.

As for the difference between `plot` and `contour`: The `plot` function
produces line objects, and the "color" property makes sense because it
directly refers to the color of the main object, the line. On the other hand,
the `contour(f)` functions essentially produce groups of patch objects, which
have both edge and face colors, hence the distinction.





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