[Octave-bug-tracker] [bug #59534] color format arguments like "black" do not work in plots

[Hartmut]

URL:
  <https://savannah.gnu.org/bugs/?59534>

                 Summary: color format arguments like "black" do not work in
plots
                 Project: GNU Octave
            Submitted by: hardy
            Submitted on: Tue 24 Nov 2020 05:24:10 PM UTC
                Category: Plotting
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Matlab Compatibility
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
                 Release: 5.2.0
         Discussion Lock: Any
        Operating System: Any

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Details:

I have just seen, that in Matlab the following format argument works as
expected:


plot (1:10, 2:11, '.-black');


This gives a proper plot with a black line in Matlab (tested with Rr2019b).
But it gives an error message in Octave (version 5.2.0).

I assume that other "color names" will also work in Matlab. I could try to
generate a list of them, if needed.

I do know many workarounds for this, e.g. '.-k' would work fine in Octave. But
nevertheless this makes Matlab m-files throw an error when using them in
Octave (as I did).

This syntax also looks 'nice' (read: human readable) to me. So maybe we should
add it to Octave as well?




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