Density estimate with bounds

Datum: Thu, 05 Nov 2009 09:44:36 +0000
Von: Gavin Simpson <gavin.simpson at ucl.ac.uk>
An: Justine Rochon <rochon at gmx.de>
CC: r-help at r-project.org
Betreff: Re: [R] Density estimate with bounds

On Thu, 2009-11-05 at 10:37 +0100, Justine Rochon wrote:

Dear R users,

I would like to show the estimated density of a (0, 1) uniformly
distributed random variable. The density curve, however, goes beyond 0
and 1 because of the kernel smoothing. 

Example:

x = runif(10000)
plot(density(x))

Is there a way to estimate the density curve strictly within (0, 1)
and still use some sort of smoothing?

Read ?density and in particular the arguments 'from' and 'to':

 from,to: the left and right-most points of the grid at which the
          density is to be estimated; the defaults are 'cut * bw'
          outside of 'range(x)'.


HTH

G

Any help would be greatly appreciated.

Best regards,

Justine Rochon

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