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Re: Patch 1827826: dgrid3d
by Philipp K. Janert
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On Sunday 11 May 2008 20:58, Ethan A Merritt wrote:
> On Sunday 11 May 2008 20:40, Philipp K. Janert wrote:
> > I have dusted off patch 1827826 (more smoothing
> > algorithms for dgrid3d) and made it to work with the
> > current development version.
> >
> > Are there any objections to inclusion into the main
> > branch at this time?
>
> Could you summarize for us what tests you have run to confirm
> that it functions as advertised?
I have run the complete gnuplot unit-test suite
against it. ;-)
I have taken some sample data set and tried
the new algorithms out on them and visually
inspected the results. The "gnu-valley" mini
data set from the gnuplot documentation is
pretty informative.
>
> Does it gracefully handle missing or non-uniform data?
Yes. Both of these are features that dgrid3d itself provides,
and which I have not modified. I merely have added some
additional smoothing kernels (and syntax and options to
manage them).
>
> Should it come with guidance or warnings about which function
> is suitable for what data?
I don't think this is really necessary. The Gaussian
kernel is probably the most general, all-purpose
kernel in this patch. I don't want to patronize the
reader, but we can include a sentence like "Unless
you have special needs, the Gaussian kernel is
likely to give satisfactory results."
>
> Maybe a demo like the one on the Wikipedia page at
> http://en.wikipedia.org/wiki/Window_function
I can provide some demos for inclusion into the demo/
folder. I think that is a good idea.
Best,
Ph.
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> On Sunday 11 May 2008 20:40, Philipp K. Janert wrote:
> > I have dusted off patch 1827826 (more smoothing
> > algorithms for dgrid3d) and made it to work with the
> > current development version.
> >
> > Are there any objections to inclusion into the main
> > branch at this time?
>
> Could you summarize for us what tests you have run to confirm
> that it functions as advertised?
I have run the complete gnuplot unit-test suite
against it. ;-)
I have taken some sample data set and tried
the new algorithms out on them and visually
inspected the results. The "gnu-valley" mini
data set from the gnuplot documentation is
pretty informative.
>
> Does it gracefully handle missing or non-uniform data?
Yes. Both of these are features that dgrid3d itself provides,
and which I have not modified. I merely have added some
additional smoothing kernels (and syntax and options to
manage them).
>
> Should it come with guidance or warnings about which function
> is suitable for what data?
I don't think this is really necessary. The Gaussian
kernel is probably the most general, all-purpose
kernel in this patch. I don't want to patronize the
reader, but we can include a sentence like "Unless
you have special needs, the Gaussian kernel is
likely to give satisfactory results."
>
> Maybe a demo like the one on the Wikipedia page at
> http://en.wikipedia.org/wiki/Window_function
I can provide some demos for inclusion into the demo/
folder. I think that is a good idea.
Best,
Ph.
-------------------------------------------------------------------------
This SF.net email is sponsored by the 2008 JavaOne(SM) Conference
Don't miss this year's exciting event. There's still time to save $100.
Use priority code J8TL2D2.
http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone
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