Hi,
I guess I have a naive question. I use kde2d function in a standard way to
estimate kernel densities of x and y (x and y are vectors) and plot them
using image().

f1=kde2d(x,y)
image(f1)

But what if I want to see kernel estimates of three variables, x, y and z (a
vector) plotted together ? Something in which x<->y is plotted and colored
according to the corresponding value of z ?


thanks
Josh

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