On Jun 19, 2012, at 12:33 PM, masterpatacca wrote:

Hi and thanks in advance to everyone who will be able to help me.

I have 2 independent lognormal distributions with different means and sd.

You should explain what that sentence means to you, preferably by offering an example in R code.

I
want to plot them togheter in a 3D plot.
How can i do this??? I'm getting crazy...

persp in base and wireframe in lattice are functions that will plot 2d surfaces and you can calculate 2d densities with kde2d in MASS or bkde2D in KernSmooth.

--

David Winsemius, MD
West Hartford, CT

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