[R] Trasparent graphs?

[Kenneth Cabrera]

Yes, Dr. Blackwell:

What I mean is the second part:

> If you need to give the appearance of
> color mixing, you will have to identify which points coincide,
> and plot those again using a third color.  I don't use lattice
> graphics, but I presume the situation is much the same.

Is it possible with pixmap library or image options?

Thank you again for your help.

Kenneth