[R] How to use density function to find h_{k}

From: Patrick Wang <pwang_at_berkeley.edu>
Date: Sun, 03 Jun 2007 10:02:02 -0700 (PDT)

 Hi, All:

 How can I use the density function to find the minimum of the bandwidth  make the density function one mode, 2 mode, 3 mode etc. usually the larger the bandwidth, the fewer mode of the density. less bumpy.

It will be impossible to try all possible bandwidths to then plot the pdf to see how many modes it has. Is there an automatic way to do this Like for loop 1000, try bandwidth from (0, 1). is there a function to get how many modes from the density function? the Mode function in R doesnot seem to serve this purpose.

 Thanks
 pat



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