[R] How to estimate or approximate a 3-D surface

[Stuart Leask]

Locfit has worked well for me.
http://cm.bell-labs.com/cm/ms/departments/sia/project/locfit/

Stuart

Dr Stuart Leask MA MRCPsych, Clinical Lecturer in Psychiatry
University of Nottingham Dept of Psychiatry, Duncan Macmillan House
Porchester Road, Nottingham. NG3 6AA. UK
http://www.nottingham.ac.uk/psychiatry/staff/sjl.html

----- Original Message ----- 
From: "Simon Wood" <simon at stats.gla.ac.uk>
To: "Feng Zhang" <f0z6305 at labs.tamu.edu>
Cc: "R-Help" <r-help at stat.math.ethz.ch>
Sent: Tuesday, March 04, 2003 9:55 AM
Subject: Re: [R] How to estimate or approximate a 3-D surface


> Have you tried looking at packages mgcv or gss? 
> 
> > Now I am going to estimate or approximate a surface in
> > 3-D space given a large enough number of (x,y,z) data sets.
> > 
> > So for these 3-D data points, is it possible to get a surface
> > function, like z=f(x,y) to represent this underlying surface?
> 
> Simon
> _____________________________________________________________________
> > Simon Wood simon at stats.gla.ac.uk        www.stats.gla.ac.uk/~simon/
> >>  Department of Statistics, University of Glasgow, Glasgow, G12 8QQ
> >>>   Direct telephone: (0)141 330 4530          Fax: (0)141 330 4814
> 
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