[Octave-bug-tracker] [bug #41240] image class is not preserved in cdata field of graphics handle

[Rik]

Follow-up Comment #3, bug #41240 (project octave):

I added support in C++ for integer formats with this changeset
(http://hg.savannah.gnu.org/hgweb/octave/rev/44f0d1a53ead).  Octave can will
now store cdata in the same datatype (uint8, single, etc.) as the original
input format to image().

At this point, this bug should be easy to fix.  In imshow.m there is this
line:
  

  ## This is for compatibility.
  if (! (indexed || (true_color && isinteger (im))) || islogical (im))
    im = double (im);
  endif


This line was coded a long time ago and is probably no longer accurate. 
Someone with access to Matlab should verify how imshow behaves and possibly
this line can be deleted.  Actually, the whole of imshow looks like it could
be cleaned up to just call image or imagesc for the backend.


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