Hi,
I am using the KernSmooth package to estimate nonparametrically bivariate
density functions. However, it seems that the bandwidths (one for each
co-ordinate direction) have to be selected manually. This does not apply
for the univariate case, for which dpik (included in KernSmooth) uses
up-to-date plug-in rules.
Does anyone know about a package, or function, which estimates bandwidths
for the BIVARIATE case, following, for instance, the plug-in methods
suggested by Wand and Jones?
I will appreciate your help a lot.
Thanks,
Emili
References:
Wand, M. P. and Jones, M. C. (1995). Kernel Smoothing. Chapman and Hall,
London.
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