xyplot(): How to Apply Conditional?
On Oct 17, 2012, at 10:44 AM, Rich Shepard wrote:
The xyplot help page covers several lattice plots and states that with the exception of xyplot the formula can have the form x ~ y | c. I need to generate x-y plots for only one of two levels of a conditioning factor. What is the recommended way to do this?
What exactly is being requested? Do you just need to learn how to use the subset parameter? I would not think that the conditioning syntax would be used when there were only one level desired.
David Winsemius, MD Alameda, CA, USA