Re: [R] Code density functions

From: Uwe Ligges <ligges_at_statistik.uni-dortmund.de>
Date: Wed 07 Jul 2004 - 15:51:35 EST

F Z wrote:
> Dear Andy
>
> Thanks for your reply. I don't seem to find the file that you
> suggested. I tried:
>
>> file.show('C:/Program Files/R/rw1091/src/nmath/dnorm.c.')

You have installed a binary distribution. You need to get the source tarball (directly accessible via the main CRAN page) that includes the file.

Uwe Ligges

> NULL
> Warning message:
> file.show(): file C:/Program Files/R/rw1091/src/nmath/dnorm.c. does not
> exist
>
> Then I looked at the directory and tried a file with similar name:
>

>> file.show('C:/Program Files/R/rw1091/src/include/Rmath.h')

>
>
> But this file does not show the actual code used to calculate the
> densities, only the declarations of the procedures.
>
> What am I doing wrong?
>
> Thanks again!
>
> Francisco Zagmutt :)
>
>
>> From: "Liaw, Andy" <andy_liaw@merck.com>
>> To: "'F Z'" <gerifalte28@hotmail.com>,R-help@stat.math.ethz.ch
>> Subject: RE: [R] Code density functions
>> Date: Tue, 6 Jul 2004 18:35:24 -0400
>>
>> Dear <insert your name here>:
>>
>> You need to look at the C-level source codes, in R-1.9.1/src/nmath/d*.c.
>>
>> Andy
>>
>> > From: F Z
>> >
>> > Hello
>> >
>> > I would like to see the algorithm that R uses to generate
>> > density functions
>> > for several distributions (i.e. Normal,Weibull, etc).  I tried:
>> >
>> > >dnorm
>> > function (x, mean = 0, sd = 1, log = FALSE)
>> > .Internal(dnorm(x, mean, sd, log))
>> > <environment: namespace:stats>
>> >
>> > How can I see the code used for densities?
>> >
>> > Thanks!
>>
>>
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>
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https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Wed Jul 07 16:08:45 2004

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