[R] question in xyplot of lattice

Aimin Yan aiminy at iastate.edu
Fri Dec 7 20:08:40 CET 2007


I try to make a xyplot like the following:

xyplot(y1+y2~id|groups, ...)

I also want to calculate cor(y1,y2) in each group, print it on each panel.

Does anyone know how to write panel function for this?

Thanks,

Aimin



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