Sorry. I'm using Windows XP and R 2.7.0, and the same problem occurred for various graphics devices (windows, pdf, jpeg).
Marcin On Thu, Jun 26, 2008 at 11:54 AM, Prof Brian Ripley <[EMAIL PROTECTED]> wrote: > On Thu, 26 Jun 2008, Marcin Kozak wrote: > >> Hi all, >> >> I have a simple question and couldn't find any post on this. When >> plotting simple scatterplots (other plots as well), e.g., >> >> x<-rnorm(30, 10, 1) >> y<-rnorm(30, 10, 1) >> plot(x, y, pch = 15, cex = 1), >> >> the points, even those close to each other, may have visibly different >> sizes. Do you know what's going on with that? > > No, because you haven't followed the posting guide and told us your OS, R > version and what graphics device this is. > > This may be an artefact of rasterization in the device, since you are > plotting squares with numeric (not integer) coordinates, and these need to > be mapped to pixels on a screen device. So for example the interval (3.7, > 6.0) might light up 3 pixels, and (3.4, 5.7) might light up 4. > >> >> Thanks in advance, >> Marcin >> >> ______________________________________________ >> 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. >> > > -- > Brian D. Ripley, [EMAIL PROTECTED] > Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ > University of Oxford, Tel: +44 1865 272861 (self) > 1 South Parks Road, +44 1865 272866 (PA) > Oxford OX1 3TG, UK Fax: +44 1865 272595 > -- "Build up your weaknesses until they become your strong points" -- Knute Rockne ______________________________________________ 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.
