3-D plot of a bidimensional lognormal distribution

[masterpatacca]

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

Thanks

Ale

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[David Winsemius]

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.

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David Winsemius, MD
West Hartford, CT

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