[R] Using different symbols for different points in coplot scatter diagram

[Gabriel R. Toro]

Hi,

I am trying to create a set of scatter diagrams with coplot, and I 
want to use different symbols for each class of points (depending on 
where the data point came from).

I have the array with the required symbols, but I am not sure how to 
pass that array to the panel function, and whether I need to modify 
my panel function.

I would appreciate any suggestion.  Better yet, an example (including 
code) would be great.

Thanks,

Gabriel