[R] Fitting Hastie's principal surfaces in R

[Hall, Mark]

Did you search for the princurve package?  Sounds like it may be what you
want.
See https://cran.r-project.org/web/packages/princurve/index.html

Best, MEH

Mark E. Hall, PhD
Assistant Field Manager
Black Rock Field Office
Winnemucca District Office
775-623-1529.

On Sun, Jan 1, 2017 at 2:56 AM, Neverstop . <neverstop at hotmail.it> wrote:

> Hello,
>
> I need to summarize a three-dimensional dataset through a principal
> surface that passes through the middle of the data. Principal surfaces are
> non-linear generalization of the plane created by the first two principal
> components and provide a non-linear summary of p-dimensional dataset.
> Principal surfaces are described in this 1989 article by Hastie and
> Stuetzle: https://web.stanford.edu/~hastie/Papers/Principal_Curves.pdf .
> They were introduced by Trevor Hastie in his Ph.D dissertation:
> http://www.slac.stanford.edu/cgi-wrap/getdoc/slac-r-276.pdf
>
> I'm looking for a package to fit principal surfaces with R.
> I've come across the package princurve created by TrevorHastie, but it
> allows to fit principal curves only. How can I fit two-dimensional
> principal surfaces in R?
>
> Thank you.
>
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>
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