[R] how to study the code of R

[Kjetil Brinchmann Halvorsen]

rongguiwong wrote:

>i want to study R programming by studying the existing code from R itself,but 
>i don't know how to read the code,can any one give me some guide?
>my R is installed in /usr/lib/R/
>
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>
One trick which can be usefull for a start is to use debug.
Choose some function to learn, say lm.
Say
debug(lm)

and ten use lm in a small example. You can go by the evaluation of the 
code step by step,
it can be illuminating

Kjeti


>[ronggui at mylinux ronggui]$ /usr/lib/R/
>afm      bin      doc      etc      include  library  modules  share
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>>version
>>    
>>
>         _
>platform i586-mandrake-linux-gnu
>arch     i586
>os       linux-gnu
>system   i586, linux-gnu
>status
>major    1
>minor    9.1
>year     2004
>month    06
>day      21
>language R
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>
>
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-- 

Kjetil Halvorsen.

Peace is the most effective weapon of mass construction.
               --  Mahdi Elmandjra