Dear Tanya, If I follow correctly what you're trying to do, you're in effect doing a one-way MANOVA of 17 response variables on a six-level factor, with only 20 observations. That's not enough data. I'm copying to Michael Friendly in case he hasn't seen your posting and would like to comment.
Regards, John ------------------------------ John Fox, Professor Department of Sociology McMaster University Hamilton, Ontario, Canada web: socserv.mcmaster.ca/jfox > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > Behalf Of Tanya Yatsunenko > Sent: June-15-08 8:23 PM > To: r-help@r-project.org > Subject: [R] candisc() error message > > Hi, > I am doing canonical discriminant analysis using candisc function from > the candisc package. > My input is a table of species distribution (columns = abundance of each > species in each sample) in samples that are split by categories (rows), > and I want to know whether each category is associated with a particular > set of species and their abundances. > I have 20 rows (samples) split into 6 categories, and 17 columns (species). > > I am getting the following error message, which I don't understand: > > > can<-candisc(mod, data=canIN) > Error in linear.hypothesis.mlm(mod, hyp.matrix.2, SSPE = SSPE, V = V, : > The error SSP matrix is apparently of deficient rank = 16 < 17 > > Does anyone has any experience in candisc? > > -- > Tanya. > > > [[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. ______________________________________________ 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.
