hello,
You can grab the result of dyn.load and use it as the PACKAGE argument of
Module.
Romain
Le 26 févr. 2012 à 01:11, Michael Braun <bra...@mit.edu> a écrit :
> No, what I would like to do is access an Rcpp module from a dynamic library
> that is not part of a R package (e.g., loaded using dyn.load() ). If I put
> the code in a package, there is no problem. But what I am getting is:
>
>> library(Rcpp)
>> dyn.load("add.so")
>> mod=Module("adding")
>> add=new(mod$adding,1.2,3.4)
> Error in Module(module, mustStart = TRUE) :
> Failed to initialize module pointer: Error in
> FUN("_rcpp_module_boot_adding"[[1L]], ...): no such symbol
> _rcpp_module_boot_adding in package .GlobalEnv
>
> The packages that you reference are all, well, packages, and from what I can
> tell about .onLoad(), that applies only to packages. And the loadRcppModules
> function, apparently, must be called from an .onLoad function (because I get
> an error message to that effect).
>
> I have never had a problem loading compiled functions this way; it appears to
> be only an issue with modules.
>
> I would appreciate some helpful suggestions from anyone in R-land who may
> have had some success with this (e.g., specific documentation pages to look
> at, code snippets that have worked for others, or other useful suggestions on
> what to try next). Of course, if what I want to do is known to be
> impossible, that would also be a helpful response.
>
> Respectfully,
>
> Michael
>
>
> On Feb 25, 2012, at 3:24 PM, Dirk Eddelbuettel wrote:
>
>>
>> Hi Michael,
>>
>> On 25 February 2012 at 19:45, Michael Braun wrote:
>> | Hi. I would like to start using Rcpp modules in my code, but I am having
>> some
>> | trouble loading them into R. Here is an example:
>>
>> My personal approach is to follow the path of least resistance on __start
>> from an existing package__ having the feature I want to use.
>>
>> Rcpp comes with modules-using packages as part of the documentation (Rcpp
>> modules vignette) and unit tests. And there is even a package skeleton
>> generator (for which you can set an option to use modules).
>>
>> And among the now 55 CRAN packages using Rcpp (!!), a few use modules
>> too. One is my RcppBDT package, there are the two packages by Baptiste (cda,
>> planar) and probably a few more but one can't tell from the DESCRIPTION.
>>
>> Your code may have been fine, but you also need to look at the .onLoad or
>> .onAttach function etc. So starting from a working stanza really strikes me
>> as easiest.
>>
>> Hth, Dirk
>>
>> --
>> "Outside of a dog, a book is a man's best friend. Inside of a dog, it is too
>> dark to read." -- Groucho Marx
>
>
>
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