[Octave-bug-tracker] [bug #58282] Missing plot properties 'MarkerFaceAlpha' and 'MarkerEdgeAlpha' in the scatter function

[Markus Mützel]

Update of bug #58282 (project octave):

                  Status:                    None => Confirmed              
                 Release:                   4.2.2 => dev                    
        Operating System:               GNU/Linux => Any                    

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Follow-up Comment #1:

"scatter" in Octave is implemented using patch objects - or rather a hg group
containing (several) patch objects.
Since patch objects don't have the properties 'MarkerFaceAlpha' and
'MarkerEdgeAlpha', they also cannot be set with scatter.

To resolve this bug, we probably would need to implement a proper scatter
graphics object. Given the fact that many calculations that are done for patch
objects aren't really needed for scatter plots (e.g. co-planarity checks,
calculation of normals, lighting, ...), this might also lead to a performance
improvement for scatter plots.
Also some features are specific to scatter objects (e.g. different marker
sizes in the same object, and the properties mentioned in comment #0).

However, this is a larger project.
On the plus side, this scatter object (should it be implemented) could
probably share some code with the existing patch object.

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