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[Octave-bug-tracker] [bug #42043] image(X, Y, Img) yields distorted disp


From: Falk Tannhäuser
Subject: [Octave-bug-tracker] [bug #42043] image(X, Y, Img) yields distorted display
Date: Thu, 03 Apr 2014 22:26:11 +0000
User-agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0

URL:
  <http://savannah.gnu.org/bugs/?42043>

                 Summary: image(X, Y, Img) yields distorted display
                 Project: GNU Octave
            Submitted by: fata
            Submitted on: Do 03 Apr 2014 22:26:10 GMT
                Category: Plotting
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Regression
                  Status: None
             Assigned to: None
         Originator Name: Falk Tannhäuser
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.8.1
        Operating System: Microsoft Windows

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Details:

The following command yields a distorted picture display in Octave version
3.8.1 (Cygwin 64-bit / gnuplot), while a normal (i.e. almost square) picture
is generated when replacing the file /usr/share/octave/3.8.1/m/image/image.m
by the corresponding file from version 3.8.0:

image(1:5, 1:20, 255*eye(60))

See the two attached PNG files for the different results.
This strange behaviour breaks in particular the specgram() function from the
signal package, which is how I noticed the problem.



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File Attachments:


-------------------------------------------------------
Date: Do 03 Apr 2014 22:26:10 GMT  Name: image_380.png  Size: 10kB   By: fata

<http://savannah.gnu.org/bugs/download.php?file_id=31117>
-------------------------------------------------------
Date: Do 03 Apr 2014 22:26:10 GMT  Name: image_381.png  Size: 10kB   By: fata

<http://savannah.gnu.org/bugs/download.php?file_id=31118>

    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?42043>

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