[R] error related to approxfun in R 2.7.0
maechler at stat.math.ethz.ch
Sat Jun 21 23:37:05 CEST 2008
>>>>> "KM" == Karl Marx <tammisiech at gmail.com>
>>>>> on Thu, 19 Jun 2008 23:01:31 +0200 writes:
KM> I'm testing R version 2.7.0 on windows and there seems
KM> to be a compatibility issue with objects that were
KM> created by "approxfun" in older versions. As long as the
KM> objects were created in version 2.7.0 things work ok,
KM> but calling the interpolated functions from R version
KM> 2.0.1 causes this error:
KM> Error in .C("R_approx", as.double(x), as.double(y),
KM> as.integer(n), xout = as.double(v), : C symbol name
KM> "R_approx" not in DLL for package "base"
KM> What's the problem and how can t be resolved (need to be
KM> compatible with old data)?
approxfun() wa moved from "base" to "stats".
If f <- approxfun(...) in R 2.0.1
and you save f , load it in R 2.7.0,
you can do
body(f)[][["PACKAGE"]] <- "stats"
and then use f(..) in R 2.7.0.
Martin Maechler, ETH Zurich
PS: Do I guess correctly, that you are Swiss?
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