Quantreg - 'could not find function"rq"'

-----Original Message-----
From: David Winsemius [mailto:dwinsemius at comcast.net] 
Sent: Donnerstag, 7. Januar 2010 14:22
To: Meyners,Michael,LAUSANNE,AppliedMathematics
Cc: Gough Lauren; r-help at r-project.org
Subject: Re: [R] Quantreg - 'could not find function"rq"'


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.

-----Original Message-----
From: r-help-bounces at r-project.org
[mailto:r-help-bounces at r-project.org] On Behalf Of Gough Lauren
Sent: Donnerstag, 7. Januar 2010 13:44
To: r-help at r-project.org
Subject: [R] Quantreg - 'could not find function"rq"'

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: lgxlg1 at nottingham.ac.uk <mailto:lgxkl2 at nottingham.ac.uk>

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David Winsemius, MD
Heritage Laboratories
West Hartford, CT