Hi, image() resizes the range of the data to roughly 0-1 , as you can see with par()$usr
so what you need is: axis(1, 1:5/5, colnames(x)) or something similar. the c() c(colnames(x)) is unnecessary, since colnames(x) already returns a character vector, but in the example you provided (thanks!), x doesn't have any colnames any way. Sarah On Fri, Sep 23, 2011 at 1:03 PM, Maxim <deeeperso...@googlemail.com> wrote: > Hi, > > > I have a question concerning the image function and how to generate custom > axis labels: > > > > dat<-sample(0:1,1000,replace=T) > > matrix(dat,ncol=5,nrow=200)->x > > x[order(x[,1],x[,2],x[,3],x[,4],x[,5]),]->x > > > I would like to have a heatmap kind of thing like this: > > > > image(t(x),col=c(0,1),axes=F) > > axis(1, 1:5, c(colnames(x))) > > > I only do see parts of the axis (only an "A" is drawn, position is wrong in > addition), what is wrong? > > > For a normal xy-plot this type of axis-definition obviously works > > > plot(1:5, rnorm(5), axes = FALSE) > > axis(1, 1:5, c(colnames(x))) > > > > What do I miss? > -- Sarah Goslee http://www.functionaldiversity.org ______________________________________________ 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.
