curve fitting

"Rachid" == Rachid Cheddadi <rachid.cheddadi at vmesa12.u-3mrs.fr> writes:

Rachid> Hi, I have a simple set of two columns data (x,y)
    Rachid> and I would like to find the equation which provides
    Rachid> the best fit using R (without any preconceived idea
    Rachid> about any polynomial or exponential or whatever
    Rachid> function).  Any help please?  Thanks Rachid --

Have you looked at

     library(modreg)
     help(smooth.spline)
?
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