Problems like these could be caused by improperly spaced columns. Try table(tdf1). If you see only "0" and "1", then you should be fine. However I suspect that you might see things like " 0", "0", " 1", "1" which means that there is a an extra space between the delimiters.
Report back what you get and we can work around a solution if need be. Regards, Adai On Wed, 2005-11-09 at 21:55 +0100, Illyes Eszter wrote: > Dear All, > > It's Eszter from Hungary, a total beginner with R. My problem is the > following: > > I have a dataset with binary values as a comma separated textfile. The > samples are in the coloumns and the species are in the rows. > > I have to transpose it for the further PCoA analysis. There is no > problem with reading the dataset. > > When I transpose the dataset, the original values become strings > (instead of 0,1,0,0,1 I have "0","1","0","0","1"). The distance matrix > cannot be counted from the transposed dataset, I have 2 error > messages: > > <Warning in vegdist(tdf1, method = "jaccard", binary = FALSE, diag = > FALSE, : results may be meaningless because input data have > negative entries> > > <Error in rowSums(x, prod(dn), p, na.rm) : 'x' must be numeric> > > I do not understand the first, since I have only 1 and 0 in the dataset. I > guess I have the second because of the strings instead of values in the > dataset. > > Could you please help me solving these problems? I could not find > anything about these in the manuals. > > Thank you, cheers: > > Eszter > > p.s. This is a new problem, last week I worked with a similar dataset > and I did not get any error message like these. > > > > _____________________________________________________________________ > Menő csengőhangok (MP3 is!) és színes képek a mobilodra. > Nálunk szinte mindent megtalálsz, KLIKK IDE! www.7777oplogo.hu > > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
