[R] Quantreg - 'could not find function"rq"'

[Gough Lauren]

Hi all,

I'm having some troubles with the Quantreg package. I am using R
version 2.10.0, and have downloaded the most recent version of Quantreg
(4.44) and SparseM (0.83 - required package). However, when I try to
run an analysis (e.g. fit1<-rq(y~x, tau=0.5)) I get an error message
saying that the function "rq" could not be found. I get the same
message when I try to search for any of the other functions that should
be in the package (e.g. help(anova.rq)).

I used this package last year and still have the old versions of both
quantreg and SparseM saved on my machine. When I load these older
packages and attempt an analysis (which, incidentally, worked fine last
February) I get the same error messages as I do with the new versions.

The only think I have changed since last February is the version of R I
am using - is there any reason why quantreg wouldn't work in version
2.10.0? I'm not very experienced with R so I'm struggling to work out
what may be going wrong - does anyone have any suggestions!?

Many thanks

Lauren

--_______________________________________

Lauren Gough - Postgraduate Research Student
University of Nottingham, School of Geography, Nottingham, NG7 2RD

Tel: +44 (0)115 8467052
Email: lgx...@nottingham.ac.uk <mailto:lgx...@nottingham.ac.uk>

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[Meyners, Michael, LAUSANNE, AppliedMathematics]

Are you sure you called
library(Quantreg)
before calling any function?
M.

[David Winsemius]

On Jan 7, 2010, at 8:07 AM, Meyners, Michael, LAUSANNE,
AppliedMathematics wrote:

> Are you sure you called
> library(Quantreg)
> before calling any function?
> M.

Are you both using a package with the exact spelling "Quantreg"? I
would have expected it to be :

library(quantreg)

--
David.

David Winsemius, MD
Heritage Laboratories
West Hartford, CT

[Meyners, Michael, LAUSANNE, AppliedMathematics]

Frankly, I have never even heard about this package before and have no
clue what it does, but the error messages nevertheless suggested a
missing call of library. And I didn't bother to check the spelling, my
fault. So I guess you are right... I still didn't check :-) So to the
OP: try
library(asdf)
with "asdf" replaced by the correct package name, and mind the spelling!

Michael