[R] interpolation and numerical differentiation in R ?

Robert D. Merithew merithew at ccmr.cornell.edu
Sun Sep 2 05:27:32 CEST 2001

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.

I think I'm going to like this language/package.

Thank you!

-Robert Merithew

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