I think 'usr' can be used to specify the extent of the plotting region. So it is useful if, say, you are creating a multiplot window and want to scale all plots for comparison. I think that (for multiplots) xlim has limited usefulness.
On 23-Oct-07, at 10:12 PM, Dave Hewitt wrote: > No problem. I still think it's too bad that mtext can't handle > reading direction changes. Seems simple to implement, and mtext is > a lot easier to understand than text. I remain confused about 'usr' > in par. > > d > ______________________________________________ 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.