[R] Code density functions

[F Z]

Thanks to Andy Liaw, James Holtman and Uwe Ligges;  I downloaded and looked 
at the source and found what I need!!

Francisco



>From: Uwe Ligges <ligges at statistik.uni-dortmund.de>
>To: F Z <gerifalte28 at hotmail.com>
>CC: andy_liaw at merck.com, R-help at stat.math.ethz.ch
>Subject: Re: [R] Code density functions
>Date: Wed, 07 Jul 2004 07:51:35 +0200
>
>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 at merck.com>
>>>To: "'F Z'" <gerifalte28 at hotmail.com>,R-help at 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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