[Octave-patch-tracker] [patch #8864] add smooth3

[Markus Mützel]

URL:
  <http://savannah.gnu.org/patch/?8864>

                 Summary: add smooth3
                 Project: GNU Octave
            Submitted by: mmuetzel
            Submitted on: Mo 18 Jan 2016 12:05:03 GMT
                Category: None
                Priority: 5 - Normal
                  Status: None
                 Privacy: Public
             Assigned to: None
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any

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Details:

This is a patch to add the function smooth3 to Octave.

I did some tests to compare the results in Matlab and Octave. But the results
differ slightly. The deviations are up to 5.5*eps in one example (see
attachments smooth3_test.m and smooth3_data.mat). They might be higher in
other cases.

I am not quite sure where the small deviations come from. Maybe Matlab and
Octave use different ways to save to and load data from mat-files. Maybe there
are differences in the implementation of some functions that are used (could
be "exp" and "convn"). Or they have a completely different reason...

I can test this only on Windows and do not know whether the results are
different on other platforms.

Are these small deviations an issue?

I do not know how to implement these manual tests as automated tests at the
end of the .m-file. Is it possible to read from .mat-files in the test?

Meanwhile, I added some tests that assert the size of the resulting matrix but
not really its content.



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File Attachments:


-------------------------------------------------------
Date: Mo 18 Jan 2016 12:05:03 GMT  Name: smooth3.m  Size: 8kB   By: mmuetzel

<http://savannah.gnu.org/patch/download.php?file_id=36078>
-------------------------------------------------------
Date: Mo 18 Jan 2016 12:05:03 GMT  Name: smooth3_data.mat  Size: 45kB   By:
mmuetzel

<http://savannah.gnu.org/patch/download.php?file_id=36079>
-------------------------------------------------------
Date: Mo 18 Jan 2016 12:05:03 GMT  Name: smooth3_test.m  Size: 611B   By:
mmuetzel

<http://savannah.gnu.org/patch/download.php?file_id=36080>

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  <http://savannah.gnu.org/patch/?8864>

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