[R] Could I use R function lm or nlm in C code?

[Gabor Grothendieck]

On Sat, Apr 23, 2011 at 6:25 AM, Shuguang Sun <shuguang at gmail.com> wrote:
> Dear R,
>
> I'm doing some simulation work and it takes me a lot of time to do it
> in R. So I try to implement it in C code, but I want to use some R
> functions directly for my lazy and the robustness of code. For
> example, I will use lm and nlm in my program. How could I use R's lm
> and nlm function directly? I thinks these functions are not included
> in the R's include directory. Do I need to get full R's source first?
> If I have get all R's source, is it enough that I only include the
> source file for function lm or nlm?
>
> system:
> Windows XP
> R 2.13.0
> Rtools 2.13
>
>

Before moving to C, try replacing lm with the faster lm.fit (see
?lm.fit) and see if that gives you sufficient speedup for your needs.


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