Hmm. I didn't have this error on my smaller dataset, but i get the same thing when i use a bigger dataset. So far, I know all i know is what the error tells me, it has something to do with the way i am reading in the "interesting" nodes that i want to highlight. I have been looking at this page: http://stat.ethz.ch/R-manual/R-devel/library/base/html/levels.html and this page: http://www.ats.ucla.edu/stat/R/modules/factor_variables.html i'll let you know if i sort it out! Aoife On Sat, Mar 10, 2012 at 8:12 PM, aoife doherty <aoife.m.doherty@gmail.com>wrote: > I can't help you yet because i am only learning it now myself, but have > you seen the intro pdf on the made4 page? > > http://www.bioinf.ucd.ie/people/aedin/R/ > > > > On Sat, Mar 10, 2012 at 5:08 PM, Aaral Singh <aaral.singh@gmail.com>wrote: > >> Hello. I have followed conversation re:plotting a ca. >> >> Have try with data. >> >> I receive this error. >> >> >> > plotCA(codonCA, rowFac=fac,pch=c(18,20), cols=c("red", "blue"), >> plotrowLabels=TRUE) >> Error in fac2char(rowFac, pch) : >> Number does not equal to number of factor levels >> >> I see error in function: >> >> fac2char<-function(fac, newLabels) { >> > cLab<- class(newLabels) >> > if (!length(levels(fac))==length(__newLabels)) stop("Number >> > does not equal to number of factor levels") >> >> May you explain what this means? >> >> Thank >> Aaral >> >> > [[alternative HTML version deleted]]