[Octave-bug-tracker] [bug #32275] "surf" function incorrectly handles NaN in colour data

[D Walker]

URL:
  <http://savannah.gnu.org/bugs/?32275>

                 Summary: "surf" function incorrectly handles NaN in colour
data
                 Project: GNU Octave
            Submitted by: staccato123
            Submitted on: Fri Jan 28 13:54:18 2011
                Category: Plotting
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
             Assigned to: None
         Originator Name: D Walker
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.2.3
        Operating System: GNU/Linux

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Details:

Test Case:

>> c = [1 1.5 -1 0.2 2; 2 1.8 1.2 0.4 -0.8;1.6 NaN 0.7 2 -2;-1.1 1.5 0.1 -0.7
0];
>> surf(zeros(size(c)),c)

Produces matlab_surf_nan_bug.png in matlab and octave_surf_nan_bug.png in
octave.

Using 

>>surf(zeros(size(c))+(c-c),c)


in Octave (So there is a NaN in the zeroes matrix to match the one in the
colour matrix) produces octave_surf_bug_2.png. Looks like there's some
difference in the averaging to me.



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File Attachments:


-------------------------------------------------------
Date: Fri Jan 28 13:54:18 2011  Name: octave_surf_bug_2.png  Size: 6kB   By:
staccato123

<http://savannah.gnu.org/bugs/download.php?file_id=22545>
-------------------------------------------------------
Date: Fri Jan 28 13:54:18 2011  Name: octave_surf_nan_bug.png  Size: 6kB  
By: staccato123

<http://savannah.gnu.org/bugs/download.php?file_id=22546>
-------------------------------------------------------
Date: Fri Jan 28 13:54:18 2011  Name: matlab_surf_nan_bug.png  Size: 8kB  
By: staccato123

<http://savannah.gnu.org/bugs/download.php?file_id=22547>

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