[R] interp equivalent

[Paulo J. Ribeiro Jr]

Hi

I'm looking to a function in R equivalent to S-PLUS'  "interp".

Is there any implementation in R?
If not, is there any similar interpolation function such that at
the data points the interpolated values concides with the data? 

Thanks in advance
P.J.

Paulo Justiniano Ribeiro Jr
Dept Maths & Stats  -  Fylde College
Lancaster University
Lancaster LA1 4YF   -  U.K.

e-mail: paulojus at est.ufpr.br
http://www.maths.lancs.ac.uk/~ribeiro






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