On Thu, 26 Jun 2008, Marcin Kozak wrote:
Sorry. I'm using Windows XP and R 2.7.0, and the same problem occurred
for various graphics devices (windows, pdf, jpeg).
I don't see it for pdf -- that's probably a viewer artefact and you need
to look at higher resolution.
For windows() and jpeg() it is rasterization.
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
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PLEASE do read the posting guide
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--
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
--
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
______________________________________________
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.
