Yes. According to your suggestion,I modified my code.It works well. Thanks you very much.
My best. 2011/7/26 Peter Ehlers <ehl...@ucalgary.ca> > On 2011-07-26 00:16, Lao Meng wrote: > >> Hi all: >> There's a question about glht function. >> >> My data:data_ori,which inclue CD4, GROUP,time. >> >> >> f_GROUP<-factor(data_ori$**GROUP) >> >> f_GROUP is a factor of 3 levels(0,1,2,3) >> >> >> result<- lme(sqrt(CD4) ~ f_GROUP*time ,random = ~time|ID,data=data_ori) >> >> glht(result, linfct = mcp(f_GROUP="Tukey") ) >> Error in `[.data.frame`(mf, nhypo[checknm]) : undefined columns selected >> >> >> I can't find out the reason for Error. >> > > I think glht() is looking for f_GROUP in data_ori. > You have defined f_GROUP in your global environment but > have not added it to your dataframe. > > Peter Ehlers > > >> >> Any help from you are welcome. >> >> >> Many thanks! >> >> [[alternative HTML version deleted]] >> >> ______________________________**________________ >> R-help@r-project.org mailing list >> https://stat.ethz.ch/mailman/**listinfo/r-help<https://stat.ethz.ch/mailman/listinfo/r-help> >> PLEASE do read the posting guide http://www.R-project.org/** >> posting-guide.html <http://www.R-project.org/posting-guide.html> >> and provide commented, minimal, self-contained, reproducible code. >> > > [[alternative HTML version deleted]] ______________________________________________ R-help@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.
