[Octave-bug-tracker] [bug #65010] compatibility: colormaps now default to 256 colors in matlab

[Nicholas Jankowski]

URL:
  <https://savannah.gnu.org/bugs/?65010>

                 Summary: compatibility: colormaps now default to 256 colors
in matlab
                   Group: GNU Octave
               Submitter: nrjank
               Submitted: Mon 11 Dec 2023 09:57:32 AM EST
                Category: Octave Function
                Severity: 2 - Minor
                Priority: 5 - Normal
              Item Group: Matlab Compatibility
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
                 Release: dev
         Discussion Lock: Any
        Operating System: Any
           Fixed Release: None
         Planned Release: None


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Follow-up Comments:


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Date: Mon 11 Dec 2023 09:57:32 AM EST By: Nicholas Jankowski <nrjank>
as of 2019b, Matlab colormaps use 256 colors as the default rather than the
previous 64 (which is currently used by matlab).

e.g., https://www.mathworks.com/help/matlab/ref/spring.html :

"R2019b: Colormaps have 256 colors by default
Starting in R2019b, colormaps have 256 colors by default.

In R2019a and previous releases, the default size is 64."

In most of the colormaps this should involve changing the one line containing
the current default value of 64, then adjusting BISTs, docstrings,
defaultColorMap, and seeing if anything dependent expected that default size
of 64x3.  







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