In R, I can plot circles at specified sizes using the symbols() function, but for some reason it won’t allow me to do it in color. For example, try this:
symbols (0, 0, circles=1, col="red")
It makes a black circle, just as if the “col” argument had never been specified. What’s wrong?
P.S. I could just write my own function to draw circles, but that would be cheating. . . .