[R] Looking up the code for a function

[Boris Steipe]

Here's a discussion on stack overflow with more hints ...
  http://stackoverflow.com/questions/19226816/how-can-i-view-the-source-code-for-a-function

... and a link to an R-News article by Uwe Ligges on the topic
http://cran.r-project.org/doc/Rnews/Rnews_2006-4.pdf (p. 43 f)

Cheers,
Boris

On May 6, 2015, at 11:11 AM, Viechtbauer Wolfgang (STAT) <wolfgang.viechtbauer at maastrichtuniversity.nl> wrote:

> Probably these are non-exported functions. Try:
> 
> getAnywhere(<function name>)
> 
> Or if you know which package a function comes from:
> 
> <package name>:::<function name>
> 
> Best,
> Wolfgang
> 
> --    
> Wolfgang Viechtbauer, Ph.D., Statistician    
> Department of Psychiatry and Neuropsychology    
> School for Mental Health and Neuroscience    
> Faculty of Health, Medicine, and Life Sciences    
> Maastricht University, P.O. Box 616 (VIJV1)    
> 6200 MD Maastricht, The Netherlands    
> +31 (43) 388-4170 | http://www.wvbauer.com    
> 
>> -----Original Message-----
>> From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Ronald
>> Kölpin
>> Sent: Wednesday, May 06, 2015 17:00
>> To: r-help at r-project.org
>> Subject: [R] Looking up the code for a function
>> 
>> Hi all,
>> 
>> I am trying to find out how a certain functionality is implemented in R
>> respectively what a certain found does exactly.
>> 
>> Specifically I am interested in multivariate kernel density estimation.
>> I found the "ks" package and its "kde" function. Usually, my preferred
>> way to "look under the hood" of any function is to simply type the
>> functions name without any brackets or arguments, in this case just:
>> kde. And this works fine for kde itself. But kde calls other functions,
>> such as kde.grid.3d or kde.points and typing those function names just
>> yields "Error: Object '[function name]' not found". These functions
>> aren't defined within kde either (as far as I can see).
>> 
>> So here is my question: Am I doing something wrong? Is there a way to
>> look up the code of these functions?
>> 
>> (I already tried google but found only the usual documentation
>> (vignettes) and articles referencing the function kde or the package ks).
>> 
>> Thanks a lot in advance
>> and kind regards
>> 
>> RK
>> 
>> ______________________________________________
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>> and provide commented, minimal, self-contained, reproducible code.
> 
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.