[Octave-bug-tracker] [bug #65674] colormap() does nothing

[Armin Müller]

URL:
  <https://savannah.gnu.org/bugs/?65674>

                 Summary: colormap() does nothing
                   Group: GNU Octave
               Submitter: arm_in
               Submitted: Thu 02 May 2024 07:46:05 PM UTC
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
                 Release: 9.1.0
         Discussion Lock: Any
        Operating System: Microsoft Windows
           Fixed Release: None
         Planned Release: None


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Follow-up Comments:


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Date: Thu 02 May 2024 07:46:05 PM UTC By: Armin Müller <arm_in>
No matter what I do, the image is always shown in grayscale.

Windows 10
Octave 9.1.0

also with Octave online
https://octave-online.net/

Own example:


x=rand(10,10);

figure(1)
imshow(x)
colormap jet
colorbar


figure(2)
imshow(x)
colormap('jet')
colorbar


figure(3)
imshow(x)
colormap(jet(32))
colorbar



Demo 2 from Octave help also won't work
https://octave.sourceforge.io/octave/function/imshow.html


clf;
imshow ("default.img");
colormap (autumn (64));









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