# [R] How to get the datapoints of an density estimationwithlocfit?

Ralf.Kloessinger@student.fh-nuernberg.de Ralf.Kloessinger at student.fh-nuernberg.de
Sun Mar 31 04:37:56 CEST 2002

```Hello!!

But I would like to get another group of datas from the density estimation. I don't know if these information are provided by locfit or I should use an other function like plot().
Description:
Each number between 1 and 100 (only integer) for example should have only one density value. But I also would like to have the density values of points, where I have no input datas. This is the information I would like to have.
I tried it with fitted.values(), sink(), locfit()\$x.
I know this data must be there, because on the graph produced by plot() I can see the values. Or plot() calculates the points for the graph??

Nice to have:
Input data:   output data :          data range:
for locfit    density estimation     Result
1             0.01                   1
2             0.05                   2
0.03                   3
0.06                   4
5             0.02                   5
....

Ralf

> As far as I know, locfit does not store its estimates.  You have to use
> the fitted.values() function.  So, something like:
>
> library(locfit)
> x <- rnorm(200)
> f <- locfit( ~ x)
> fhat <- fitted.values(f)
> cbind(x, fhat)
>
> I think that will give you what you want.
>
> -roger
> _______________________________
> UCLA Department of Statistics
> rpeng at stat.ucla.edu
> http://www.stat.ucla.edu/~rpeng
>
> On Fri, 29 Mar 2002, Ralf.Kloessinger at student.fh-nuernberg.de wrote:
>
>> Hello!!!
>>
>> I'm just a beginner of R.  I work with locfit to get the density from
>> an numeric vector. It looks good when I plot the graph, but I need the
>> output data of locfit. For example I need somthing like that (only
>> integer values for the input): numeric vector (input of locfit)
>> density (output of locfit)  1 0.05.... 2 0.04.. 3 0.01 ...
>>
>>
>> Ralf Kloessinger
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>
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