On Thu, Jun 17, 2010 at 6:28 AM, Søren Hauberg <so...@hauberg.org> wrote:
> ons, 16 06 2010 kl. 19:15 -0400, skrev Alex Lancaster:
> > I'm the maintainer for the Fedora package of octave-forge
>
> Thanks for doing that :-)
>
> > I have definitely tracked this down to "ann" being the issue,
> > removing the package, makes the crashes go away. Is this a
> > known issue with "ann"? Apparently it hasn't been updated in
> > SVN for a while, the last update (r6006) was to allow it to
> > compile with Octave 3.2 and newer SWIG, but nothing since:
> >
> >
> http://octave.svn.sourceforge.net/viewvc/octave?view=revision&revision=6006
> >
> > Hopefully the "ann" maintainer can look into it, and let
> > us know what needs to be done, or if not, let us know whether
> > "ann" is still being actively maintained. Otherwise we may
> > just have to remove it from the Fedora package.
>
> 'ann' is a SWIG generated package, right? Sadly, these packages never
> worked properly and never saw much maintenance. Unless somebody steps up
> and actually fixes the SWIG stuff for Octave, I would recommend just
> dropping the SWIG packages from Fedora.
>
> An alternative would be to ensure that SWIG generated packages are never
> loaded by default and produce a warning when they are loaded?
>
> Søren
>
>
I have been using the ann package to do nonparametric regression, and it has
the great advantage of being _much_ faster than the brute force method of
finding nearest neighbors. I just wanted to note that this code can be very
useful. There are some problems with the Octave wrappers, though. For
example, if you put "ann;" inside a function, you get an error the second
time the function is used.
Michael
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