Re: [R] 3-D plot of likelihood

From: Duncan Murdoch <murdoch_at_stats.uwo.ca>
Date: Mon, 10 Dec 2007 11:58:32 -0500

On 12/10/2007 11:26 AM, David Bickel wrote:
> Could anyone recommend a package for visualizing a likelihood function
> of two scalar parameters? I would prefer a three-dimensional plot
> similar to the kind Mathematica is known for, perhaps generated by a
> package not specific to likelihood.

The basic strategy is to calculate a matrix of values of the likelihood, corresponding to all combinations of values of two vectors. Then persp() (in graphics) or persp3d() (in rgl) can display the surface.

I don't know of anything that corresponds to curve() to do the matrix calculations automatically, but it may well exist.

Duncan Murdoch

>
> David
>
> ______________________________
> David R. Bickel
> Ottawa Institute of Systems Biology
> BMI Dept., University of Ottawa
>
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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Mon 10 Dec 2007 - 17:44:59 GMT

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