R help - Dec 2007 - groupedData function not found

Hello,
I'm trying to use the groupedData function and R is giving me the message:
Error: can not find function "groupedData"
The code is coming from a textbook so I think it should be correct:

pigs<-data.frame(cbind(pig.time,pig.id,pig.wt))
pig.growth<-groupedData(pig.wt~pig.time|pig.id,data=pigs)

I have added the package "nlme" and to confirm that it was installed
correctly I requested the list of functions included in the package
(library(help=nlme)) and I do see groupData in the list.
I am using R 2.6.1 in Windows XP.

I'll appreciate your help.
Thanks,
Andrea Previtali
Post-doc fellow
Dept. of Biology,
Univ. of Utah, SLC, UT.

Hi Andrea,

did you try

require(nlme)

?  Adding a package is not necessarily the same as loading it.

Cheers

Andrew


On Thu, Dec 27, 2007 at 10:42:27PM +0000, andrea previtali
wrote:
> 
> Hello,
> I'm trying to use the groupedData function and R is giving me the
message: Error: can not find function "groupedData"
> The code is coming from a textbook so I think it should be correct:
> 
> pigs<-data.frame(cbind(pig.time,pig.id,pig.wt))
> pig.growth<-groupedData(pig.wt~pig.time|pig.id,data=pigs)
> 
> I have added the package "nlme" and to confirm that it was
installed correctly I requested the list of functions included in the package
(library(help=nlme)) and I do see groupData in the list.
> I am using R 2.6.1 in Windows XP.
> 
> I'll appreciate your help.
> Thanks,
> Andrea Previtali
> Post-doc fellow
> Dept. of Biology,
> Univ. of Utah, SLC, UT.
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
> 
> -- 
> This message has been scanned for viruses and
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-- 
Andrew Robinson  
Department of Mathematics and Statistics            Tel: +61-3-8344-9763
University of Melbourne, VIC 3010 Australia         Fax: +61-3-8344-4599
http://www.ms.unimelb.edu.au/~andrewpr
http://blogs.mbs.edu/fishing-in-the-bay/

have you done:

library(nlme)

in your script?

On Dec 27, 2007 5:42 PM, andrea previtali <aprevitali at hotmail.com>
wrote:
>
> Hello,
> I'm trying to use the groupedData function and R is giving me the
message: Error: can not find function "groupedData"
> The code is coming from a textbook so I think it should be correct:
>
> pigs<-data.frame(cbind(pig.time,pig.id,pig.wt))
> pig.growth<-groupedData(pig.wt~pig.time|pig.id,data=pigs)
>
> I have added the package "nlme" and to confirm that it was
installed correctly I requested the list of functions included in the package
(library(help=nlme)) and I do see groupData in the list.
> I am using R 2.6.1 in Windows XP.
>
> I'll appreciate your help.
> Thanks,
> Andrea Previtali
> Post-doc fellow
> Dept. of Biology,
> Univ. of Utah, SLC, UT.
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>


-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

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