Message-ID: <Pine.LNX.4.61.0504120742070.30943@gannet.stats>
Date: 2005-04-12T06:46:05Z
From: Brian Ripley
Subject: where is internal function of sample()?
In-Reply-To: <BAY103-F367BE42EF400A7ED46D038D3330@phx.gbl>
On Mon, 11 Apr 2005, Weijie Cai wrote:
> I am trying to write a c++ shared library for R. I need a function which has
> the same functionality as sample() in R, i.e., does permutation, sample
> with/without replacement. Does R have internal sample routine so that I can
> call it directly?
>
> I did not find it in R.h, Rinternal.h.
That's because it is not in the API. The function is do_sample in
src/main/random.c. You could construct an appropriate call with some
ingenuity.
Please note that R-devel is the list for C-level programming questions, as
the posting guide points out.
--
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595