Thank you both, these are very helpful hints. Chris, could you please suggest how to modify what you sent to also show the same labels as (horizontal) row names? I have not yet mastered the details of R graphics...
Many thanks in advance, Lara On Mon, Nov 15, 2010 at 3:25 PM, Chris Stubben <stub...@lanl.gov> wrote: > > You could display the matrix as an image then add column names (rotated > used > srt) if you really want them. > > x <- cor(matrix(rnorm(600), 60, 100)) > > # set margins with extra space at top and xpd=TRUE to write outside plot > region > op<-par(mar=c(1,1,5,1), xpd=TRUE) > > # display image without the 90 degree counter clockwise rotation > image(t(x[nrow(x):1,]), axes=FALSE) > > ## add 100 column names > y<-paste("column", 1:100) > text( seq(0,1,length=100) , 1.01, y, pos = 2, srt = 270, offset=0, cex=.7) > > > Chris Stubben > > > > > > Lara Poplarski wrote: > > > > I have a large (1600*1600) matrix generated with symnum, that I am using > > to > > eyeball the structure of a dataset. > > > > I have abbreviated the column names with the abbr.colnames option. One > way > > to get an even more compact view of the matrix would be to display the > > column names rotated by 90 degrees. > > > > Any pointers on how to do this would be most useful. Any other tips for > > displaying the matrix in compact form are of course also welcome. > > > > > > > > -- > View this message in context: > http://r.789695.n4.nabble.com/rotate-column-names-in-large-matrix-tp3043493p3043927.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > 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. > [[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.