From tibshirani at gmail.com  Fri Apr 15 00:01:19 2005
From: tibshirani at gmail.com (Tib)
Date: Fri Apr 15 00:01:37 2005
Subject: [Rd] dynamic array output by .C
In-Reply-To: <Pine.LNX.4.61.0504142212070.14473@gannet.stats>
References: <58618a6205041414062f07d2a8@mail.gmail.com>
	<Pine.LNX.4.61.0504142212070.14473@gannet.stats>
Message-ID: <58618a62050414150165aae64@mail.gmail.com>

HI,
from the examples of Writing R Extensions,  I see one still has to
declare the size of arrays by NEW_NUMERIC(n) or
allocVector(REALSXP,n), how can I extend arrays?

I know this question is a little specific, but it would be a lot
helpful if anyone can give me a  quick question. Thanks


On 4/14/05, Prof Brian Ripley <ripley@stats.ox.ac.uk> wrote:
> On Thu, 14 Apr 2005, Tib wrote:
> 
> > Greetings,
> >
> > I am building a stochastic simulation model in a C++ shared library
> > for R. My model will generate a random number of new observations and
> > also delete some old observations, however, the numbers cannot be
> > predicted before the computation engine runs. For simplicity, I am
> > trying to control my programming at the second stage (pure C++ for R).
> > It seems .C accepts fixed size of arrays as input (also ouput), can I
> > modify size of array for deleting old and adding new observations in
> > .C?
> 
> No, but .Call can.
> 
> --
> Brian D. Ripley,                  ripley@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
> 


-- 
I am Tib, not Rob.


[Rd] dynamic array output by .C
Tib