Hi Kevin,
Welcome to Rcpp!
On 23 February 2012 at 08:36, Kevin Ceder wrote:
| I started digging to Rcpp yesterday as a way to plug a C++ class I wrote into
R. It looks like RCPP_MODULE is the way to go to expose the class. However,
while following the examples I can't get the modules to initialize.
|
| I take the code from the first example in the Rcpp-Modules vignette:
| #include "Rcpp.h"
|
| using namespace Rcpp;
|
| double norm( double x, double y ) {
| return sqrt( x*x + y*y );
| }
| RCPP_MODULE(mod) {
| function( "norm", &norm );
| }
| and compile into norm.dll.
You say "and compile into norm.dll" -- the 'how' is important. You need to do
more than just saying 'R CMD SHLIB'. The Rcpp modules vignettes has details.
| Turning to R I use (following the example):
|
| > require(Rcpp)
| > mod <- Module("mod")
| > mod$(3,4)
| and get an error from R:
| Error in Module(module, mustStart = TRUE) :
| Failed to initialize module pointer: Error in
FUN("_rcpp_module_boot_mod"[[1L]], ...): no such symbol _rcpp_module_boot_mod
in package .GlobalEnv
|
| Any thoughts on where I'm going wrong here?
Hard to say from what you post but every example posted in the vignette
should work, either via inline or via a package generated with the skeleton
generator.
Dirk
| System info: Windows 7, R 2.14.1, Rcpp 0.9.10.
|
| TIA,
|
| kevin
|
| "There is nothing - absolutely nothing - half so much worth doing as simply
messing about in boats."
| ~Ratty (from Kenneth Grahame's, The Wind in the Willows)
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| Kevin R. Ceder
| PhD Candidate
| Stand Management Cooperative
| School of Forest Resources
| College of the Environment
| University of Washington
| Box 352100
| Seattle, WA 98195
| Phone: 206.543.0827
| Fax: 206.685.0790
| E-mail: th...@uw.edu
|
|
| _______________________________________________
| Rcpp-devel mailing list
| Rcpp-devel@lists.r-forge.r-project.org
| https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
--
"Outside of a dog, a book is a man's best friend. Inside of a dog, it is too
dark to read." -- Groucho Marx
_______________________________________________
Rcpp-devel mailing list
Rcpp-devel@lists.r-forge.r-project.org
https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
