[R] problem with deriv3?
B. D. Mccullough
bdm25 at drexel.edu
Mon Mar 11 03:10:45 CET 2002
Using S+ 6 for Linux and
Taking verbatim some lines from S-Plus that work
perfectly, and running them on R, I get an
unexpected error message:
R : Copyright 2002, The R Development Core Team
Version 1.4.1 (2002-01-30)
> data <- read.table("/usr/local/data/mcmanus.dat",header=T)
> mcmanus.frm <-
Error in deriv3.formula(~-log(pnorm((2 * D1 - 1) * (b0 + b1 * TT + b2 * :
Function ^A is not in the derivatives table
I did a search on the R website and at the e-mail archive,
and found nothing of help.
How can I decipher "^A" and make the appropriate corrections
to the derivative table in R?
Please reply to me. I will post a summary to the list.
PS: I believe that in R I should delete the "log" and instead use
the "log.p=T" option; presumably it is numerically more efficient.
If this is incorrect, please let me know.
B. D. McCullough
bdmccullough at drexel.edu
w: 215-895-2134 f: 215-895-2907
Department of Decision Sciences
Academic Building room 230
Philadelphia, PA 19104
``Disorganized technical documentation, albeit comprehensive, signals
a failure of the marketing department since it alone (if any) can
hire English majors.'' W. Kahan, ``Marketing versus Mathematics''
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