[Octave-bug-tracker] [bug #50417] overplotting contour over imagesc fails

[ryusuke numata]

URL:
  <http://savannah.gnu.org/bugs/?50417>

                 Summary: overplotting contour over imagesc fails
                 Project: GNU Octave
            Submitted by: rnumata
            Submitted on: Tue 28 Feb 2017 08:49:40 AM UTC
                Category: Plotting with gnuplot
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Unexpected Error
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.2.0
        Operating System: Any

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Details:

When I overplot contour over imagesc, I get lots of unreadable errors and a
wrong image as attached. 


x=0.:0.01:1.;
y=x;
z=cos(2.*pi*x')*sin(2.*pi*y);
hold on;
imagesc(x,y,z);
contour(x,y,z,'r');


The same code with graphics_toolkit('qt') seems working fine.

For older versions of octave (4.0.3),  contour lines are not shown for both
graphics toolkits.

I'm using gnuplot 5.0, I've tested on mac and linux.



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File Attachments:


-------------------------------------------------------
Date: Tue 28 Feb 2017 08:49:40 AM UTC  Name: error.tiff  Size: 27kB   By:
rnumata

<http://savannah.gnu.org/bugs/download.php?file_id=39846>
-------------------------------------------------------
Date: Tue 28 Feb 2017 08:49:40 AM UTC  Name: contour_imagesc.png  Size: 22kB  
By: rnumata

<http://savannah.gnu.org/bugs/download.php?file_id=39847>
-------------------------------------------------------
Date: Tue 28 Feb 2017 08:49:40 AM UTC  Name: contour_imagesc_4.0.3.png  Size:
227kB   By: rnumata

<http://savannah.gnu.org/bugs/download.php?file_id=39848>

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