On Apr 20, 2009, at 12:18 PM, Dieter Menne wrote:
Sebastien Bihorel <Sebastien.Bihorel <at> cognigencorp.com> writes:
I am trying to produce (standard and trellis) scatterplots which
use the
same range of the x and y axes. In addition, I would like the plots
to
be physically square. Is there one or more specific argument(s) to
plot
and xyplot what would do that? I have looked at various
combinations of
asp and pin value, but could not get what I wanted..
In lattice : aspect = 1
To satisfy both of his requests with xyplot, I think he also needs
xlim and ylim:
xy <-data.frame(x=1:10, y= rnorm(10)+5)
xyplot(y ~ x, data=xy, aspect=1)
xyplot(y ~ x, data=xy, aspect=1, ylim=c(0,11), xlim=c(0,11))
I was less successful in using xlim and ylim with plot, since it seems
to handle the x-axis differently than the y-axis as far as padding out
beyond the limits. I would typically need to set asp=0.85 to get what
looked to ba a square plot. Suggest reading the documentation for
plot.window() as a start.
--
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
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