[Octave-bug-tracker] [bug #55514] "axis equal" makes picture disappear

[Philip Nienhuis]

URL:
  <https://savannah.gnu.org/bugs/?55514>

                 Summary: "axis equal" makes picture disappear
                 Project: GNU Octave
            Submitted by: philipnienhuis
            Submitted on: Sat 19 Jan 2019 12:27:50 AM CET
                Category: Plotting
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: Philip Nienhuis
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 5.0.1
        Operating System: Any

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Details:

Steps to reproduce:

pic = imread ("cea.tif"); ## file is attached
hr = imshow (pic, "xdata", [-28493.16678, 2358.21162], "ydata",
[4224973.14326, 4255884.54380]);  ## more or less square plot
axis equal  ; ## plot disappears


In 4.4.1 this works more or less as I expect, be it that the lower part of the
picture gets truncated after "axis equal" and a rectangular plot is shown
(looks like another bug BTW).

Interchanging the vector arguments for "xdata" and "ydata" in the call to
imshow makes it work again in 5.0.1, incl. the truncated plot bottom.

AFAICS it happens in axis.m ->  __axis__  at L.227 when the
"plotboxaspectratio" property is set.





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File Attachments:


-------------------------------------------------------
Date: Sat 19 Jan 2019 12:27:50 AM CET  Name: cea.tif  Size: 265KiB   By:
philipnienhuis

<http://savannah.gnu.org/bugs/download.php?file_id=46017>

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