On Sep 13, 2011, at 8:30 AM, Timo Schmid wrote:
Hi,
I am working with the lattice package and I want to label to groups
in the xyplots with mathematical expressions.
I short example for this
library(lattice)
Case<-factor(rep(1:2,each=300))
xx<-rnorm(600,0,1)
yy<-rnorm(600,0,1)
xyplot(yy~xx|Case)
This results in two scatter plots with label "1" and "2". I would
like to substitute this labels by math expression. I used the
following code
Case<-factor(rep(1:2,each=300))
levels(Case) <- c(expression(R^2),expression(sigma_[i]))
xx<-rnorm(600,0,1)
yy<-rnorm(600,0,1)
xyplot(yy~xx|Case)
But the label did not change to mathematical expressions. Any ideas?
You should be looking at the strip.custom function. It has worked
examples.
Thank you very much for your help.
--
David Winsemius, MD
West Hartford, CT
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