It looks like a bug in bxp (which plot(factor,numeric) calls) -- it tries to make a nGroup*nGroup long vector out of boxwex:
> f <- rep(factor(as.character(1:25000)), len=50000) > x <- sin(1:50000) > boxplot(split(x, f)) Error in rep.int(boxwex, n) : cannot allocate vector of length 625000000 For certain lengths that nGroup*nGroup will wrap around to negative numbers can cause the 'no negative length vectors' message. Perhaps it means to do rep(boxwex, length=n). Do you really want that many boxplots on a page? Bill Dunlap Spotfire, TIBCO Software wdunlap tibco.com > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On > Behalf Of R. Michael > Weylandt > Sent: Wednesday, February 15, 2012 6:23 PM > To: carol white > Cc: r-h...@stat.math.ethz.ch > Subject: Re: [R] Error in rep.int(boxwex, n) : negative length vectors are > not allowed > > Can you give minimal reproducible code? I'm worried about using > strings for the x axis but it'll be easier to diagnose with data and > actual code. Use dput() to put your data sample (not your whole data > set) in email-friendly plain text. > > Michael > > On Wed, Feb 15, 2012 at 10:46 AM, carol white <wht_...@yahoo.com> wrote: > > Dear All, > > I tried to invoke plot for a matrix of 196475 x2 dimension. I loaded the > > data with read.table. On > one dimension, there are strings (names) and on the other dimension, the > floats between 0 and 1. When > I invoked plot by setting x to names and y to floats and ylim = c(0,1), I got > the following error > message: > > > > Error in rep.int(boxwex, n) : negative length vectors are not allowed > > > > > > Does it come from the large-size dimension of the matrix and which vectors > > get a negative length? > > > > Best, > > > > Carol > > > > ______________________________________________ > > 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. ______________________________________________ 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.
