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 > > http://www.oisb.ca/members.htm > > ______________________________________________ > R-help@r-project.org mailing list > 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. ______________________________________________ R-help@r-project.org mailing list 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.