[Octave-bug-tracker] [bug #52624] gnuplot toolkit binary image is only black pixels

[Dan Sebald]

URL:
  <http://savannah.gnu.org/bugs/?52624>

                 Summary: gnuplot toolkit binary image is only black pixels
                 Project: GNU Octave
            Submitted by: sebald
            Submitted on: Fri 08 Dec 2017 10:51:47 AM UTC
                Category: Plotting with gnuplot
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Any

    _______________________________________________________

Details:

Try:

monoimg(:,:,1) = logical(ones (128));
% All logical one should be white
graphics_toolkit fltk
figure(1)
imshow(monoimg)
% Not black
graphics_toolkit gnuplot
figure(2)
imshow(monoimg)

This looks like a bug related to the gnuplot rgb range change (0 to 255 is the
new default range) similar to the bug identified in
http://savannah.gnu.org/bugs/?52599 .  Perhaps all that need be done is to
send {0,255} to gnuplot rather than {0,1}.





    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?52624>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.gnu.org/