On Aug 31, 2010, at 11:34 AM, Thomas Maier wrote:
I'd like to annotate a lattice plot, e.g. xyplot, with text
containing both
Greek letters and variable values. In the base graphics plot command
this
can be accomplished with e.g. main =
substitute(paste(lambda,"=",var),list(var=var)), where var is a
variable
that contains the value.
Try wrapping as.expression around that substitute argument. Both of
these seem to deliver desired results.
> var=5
> xyplot(1~1, main = as.expression(bquote(lambda==.(var))))
> xyplot(1~1, main =
as.expression(substitute(paste(lambda,"=",var),list(var=var))))
When I try to do this in xyplot, I get the error
message "object 'lambda' not found". Any ideas on how to do this in
xyplot?
Thanks for the help!
David Winsemius, MD
West Hartford, CT
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