I suspect you have more than one version of R installed and are mixing them up. Those symbols have been in package stats for quite a while.

Try starting R with --vanilla, and if that works, clean out your startup files (see ?Startup). If not, remove all your R installations and reinstall R 2.7.0 (or R-patched).

On Tue, 6 May 2008, A.N. wrote:


Hi all,

I have issues using some basic functions in R such as these ones :

pp.test(R) (where is a vector of returns)
Error in .C("R_approx", as.double(x), as.double(y), as.integer(nx), xout =
as.double(xout),  :
 C symbol name "R_approx" not in DLL for package "base"

boxcox(reg,plotit=T)  (where reg is an lm object)
Error in .C("spline_coef", method = as.integer(method), n = as.integer(nx),
:
 C symbol name "spline_coef" not in DLL for package "base"

as I do miss some symbol names.

How can I overcome this serious problem ?


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Brian D. Ripley,                  [EMAIL PROTECTED]
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