C++ and R - R-help | R Mailing Lists

Tue, Jul 9, 2002 1:27 PM #

I am calling C++ from R.
I want C++ to return a vector whose length is not known when the C++
routine is called.

Is it possible to do this without using R objects in the C++ routine?

So far I have been using .C, but I do not see how I could use it in this
case.
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Roger D. Peng

Tue, Jul 9, 2002 4:22 PM #

I believe you need to use .Call for this.

-roger
_______________________________
UCLA Department of Statistics
rpeng at stat.ucla.edu
http://www.stat.ucla.edu/~rpeng

On Tue, 9 Jul 2002, Francisco J Molina wrote:

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Thomas Lumley

Tue, Jul 9, 2002 4:51 PM #

On Tue, 9 Jul 2002, Francisco J Molina wrote:

It might be possible to break your call into two parts, one where you work
out how large the objects are and one where you do the computation.
Otherwise you can't return objects of unknown size and would need to use
.Call and make an R object to return.  It's not as bad as it sounds.

	-thomas






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