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From: pasino pasin on 9 Aug 2010 03:02
I have a 2D data, xy plane is my pixels and z axis is the values corresponding to each pixel(like an image).
I want to model my z data with Gaussians, how can I fit multivariate Gaussians to my data?
Is there such a package of Matlab or any other way, code etc.?

Thanks a lot
From: Richard Willey on 9 Aug 2010 08:54
Statistics Toolbox supports Gaussian Mixtures.

You can access the online User Guide at

http://www.mathworks.com/access/helpdesk/help/toolbox/stats/bq_679x-24.html
There is also a lot of good information in the section of the documentation
that describes the gmdistribution class.

http://www.mathworks.com/access/helpdesk/help/toolbox/stats/gmdistribution.html


"pasino pasin" <ozlempasin(a)hotmail.com> wrote in message
news:i3o95d$lrs$1(a)fred.mathworks.com...
>I have a 2D data, xy plane is my pixels and z axis is the values
>corresponding to each pixel(like an image).
> I want to model my z data with Gaussians, how can I fit multivariate
> Gaussians to my data?
> Is there such a package of Matlab or any other way, code etc.?
>
> Thanks a lot
>


From: pasino pasin on 9 Aug 2010 15:49
"Richard Willey" <rwilley(a)mathworks.com> wrote in message <i3otpr$cq5$1(a)fred.mathworks.com>...
> Statistics Toolbox supports Gaussian Mixtures.
>
> You can access the online User Guide at
>
> http://www.mathworks.com/access/helpdesk/help/toolbox/stats/bq_679x-24.html
> There is also a lot of good information in the section of the documentation
> that describes the gmdistribution class.
>
> http://www.mathworks.com/access/helpdesk/help/toolbox/stats/gmdistribution.html
>
>
> "pasino pasin" <ozlempasin(a)hotmail.com> wrote in message
> news:i3o95d$lrs$1(a)fred.mathworks.com...
> >I have a 2D data, xy plane is my pixels and z axis is the values
> >corresponding to each pixel(like an image).
> > I want to model my z data with Gaussians, how can I fit multivariate
> > Gaussians to my data?
> > Is there such a package of Matlab or any other way, code etc.?
> >
> > Thanks a lot
> >
>
Thank you, I have looked at those links but I just see clustering of xy scattered points, but I have temperature data(I mean z axis) my data is like an image(xy pixels, z temperature data), I try to cluster and fit Gaussians to my z axis, kind of modeling the surface with multi peak Gaussians, how can I do that?
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