[R] interpolation and numerical differentiation in R ?
Prof Brian D Ripley
ripley at stats.ox.ac.uk
Sun Sep 2 08:47:05 CEST 2001
On Sat, 1 Sep 2001, Robert D. Merithew wrote:
> On 1 Sep 2001, Douglas Bates wrote:
> > See interpSpline in the splines library.
> > When evaluating the interpolating spline produced by interpSpline you
> > can specify that you want derivatives instead of the function value.
> perfect. I'd use predict.bSpline, it seems.
> My problem was that I started looking in the wrong place. I was wandering
> around the documentation on the web site, which I was unable to search
> (pdf files). Now that I've installed R, and can search I see that R has
> an enormous number of functions which will be useful to me. I didn't get
> that impression from the 'Basics' book, though the book will be very
> helpful as I get used to the data structures.
Well, it is a basic book, not really a book on Basics of the language.
You didn't say which edition: both are about S-PLUS not R, and the current
Second Edition is mainly aimed at GUI-using users of S-PLUS 2000.
I'd say the other books mentioned in the R FAQ were better for your
purposes, although none hit exactly this (which is only in R).
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272860 (secr)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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