[R] How to use c routines in the exiting package?

[Prof Brian Ripley]

On Tue, 11 May 2004, Rui wrote:

> Hi all,
>  
> I want to know some details about the c routine "lasso" in the functions
> of "gl1ce()" .  However, I have following troubles. First, I can not
> find the routine in the local directories of this function (or package).

Then something is wrong with your search techniques.  You have obtained
the *sources* of the package from CRAN, haven't you?  Look in the
lasso2/src directory of the tarball lasso2_1.2-0.tar.gz.

> Second, if I found the routine, could I call it just like this way, say,
> fit <- .C("lasso", ....,PACKAGE = "lasso2") in my own functions. 

Yes.

> My system
> is Windows98 with R1.80.

R is at 1.9.1, and unlikely to reach 1.80 before 2.0.0

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-- 
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