What is 'hcj'? Did you perhaps mean hsj()?
The Sheather-Jones methods (or at least one of them) are implemented in
packages stats (from MASS), KernSmooth and sm, and all are for Normal
kernels. There is a concept of `equivalent' bandwidth for different
kernels discussed in all good books on the subject of kernel density
estimation, and this will enable you to convert the bandwidth to other
kernels: see the help page for density (which shows the factor is very
close to one for the triangular kernel).
On Wed, 22 Mar 2006, duraikannan sundaramoorthi wrote:
> Dear All,
>
> Is there a way to find bandwidths for Normal, and Triangular Kernels
using Sheather Jones plug-in method. If not, is there a way we could
convert the bandwidth obtained by the default( I assume that the default
is standard normal) in hcj(x,...) to other kernels.> I appreciate your help.
> Thanks
> Durai
>
>
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--
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
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