[Octave-bug-tracker] [bug #35033] mangled filled contour plot

[Ben Abbott]

URL:
  <http://savannah.gnu.org/bugs/?35033>

                 Summary: mangled filled contour plot
                 Project: GNU Octave
            Submitted by: bpabbott
            Submitted on: Sun 11 Dec 2011 01:43:39 PM EST
                Category: Plotting
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: Ben Abbott
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Any

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Details:

This bug was found by Walter White <address@hidden> on posted to
help-octave Octave <address@hidden>.

Walter found that Octave mangles the *filled* contour for his complicated
example.

I verified that Octave and Matlab produce similar equivalent results for
contour(), so only the *filled* version is impacted.

I've attached he m-file (walter.m) which may be used to produce the plot.
Results for Matlab R2011b and Octave (tip: de90542b7afc) have been attached.

My impression is that the problem is with  __contour__.m



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File Attachments:


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Date: Sun 11 Dec 2011 01:43:39 PM EST  Name: walter.m  Size: 617B   By:
bpabbott

<http://savannah.gnu.org/bugs/download.php?file_id=24562>
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Date: Sun 11 Dec 2011 01:43:39 PM EST  Name: my_FEM_matrix.txt  Size: 807kB  
By: bpabbott

<http://savannah.gnu.org/bugs/download.php?file_id=24563>
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Date: Sun 11 Dec 2011 01:43:39 PM EST  Name: Walter-Octave.png  Size: 302kB  
By: bpabbott

<http://savannah.gnu.org/bugs/download.php?file_id=24564>
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Date: Sun 11 Dec 2011 01:43:39 PM EST  Name: Walter-MATLAB.png  Size: 61kB  
By: bpabbott

<http://savannah.gnu.org/bugs/download.php?file_id=24565>

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