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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