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" <[EMAIL PROTECTED]> To: "Feng Zhang" <[EMAIL PROTECTED]> Cc: "R-Help" <[EMAIL PROTECTED]> 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 [EMAIL PROTECTED] 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 > > ______________________________________________ > [EMAIL PROTECTED] mailing list > http://www.stat.math.ethz.ch/mailman/listinfo/r-help ______________________________________________ [EMAIL PROTECTED] mailing list http://www.stat.math.ethz.ch/mailman/listinfo/r-help
