Suppose I write some stan function like the following: functions { int integer_rng(int X) { int out = categorical_rng(rep_vector(inv(X), X)); return out; } } That function is saved in a file, integer_rng.stan. I then create a package using library(rstantools) rstan_package_skeleton('…

[image] Saving the dso from expose_stan_functions RStan Thank you guys for pointing me in this direction. This rcpp.cache.dir is a life-saver. A few notes for anyone who finds this: If you want to avoid recompilation every time you load the exposed stan functions, you have…

Thanks @bgoodri . I’m having a bit of troubles understanding how to implement this. First I compile the stan code like follows: library(rstan) options(rccp.cpp.dir="./cache") model_src <- stanc_builder("src/stan_files/integer_rng.stan") expose_stan_functions(model_src) Then I need to find the resu…

[image] bgoodri: It might be under .cache . I don’t have that folder :( rstudio@a19376b246e8:~/testStanPackage$ ls -la total 24 drwxr-xr-x 1 rstudio rstudio 200 Jan 21 20:22 . drwxr-xr-x 1 rstudio rstudio 354 Jan 21 17:18 .. -rw-r--r-- 1 rstudio rstudio 675 Jan 21 15:05 DESCRIPTION -rw-r-…

Maybe try specifying the cacheDir argument rather than relying on the option.

Thanks @bgoodri ! This did the trick: library(rstan) model_src <- stanc_builder("src/stan_files/integer_rng.stan") expose_stan_functions(model_src, cacheDir = "cache") That code generates file2586805c0a4.cpp: #include <exporter.h> #include <RcppEigen.h> // Code generated by Stan version 2.18.0 #i…

It is pretty much just delete everything that is not your functions and then apply the instructions for building a package with Rcpp.

I’m trying to follow this vignette to create a package with Rcpp. I created the integer_rng.cpp: #include <Rcpp.h> using namespace Rcpp; // [[Rcpp::export]] template <class RNG> int integer_rng(const int& X, RNG& base_rng__, std::ostream* pstream__) { typedef double local_scalar_t__; typedef …

[image] ignacio: However, that command does not create the corresponding R file. What am I missing? My bad. It did create the R file, RcppExports.R # Generated by using Rcpp::compileAttributes() -> do not edit by hand # Generator token: 10BE3573-1514-4C36-9D1C-5A225CD40393 integer_rng <- fu…

What messages do you get during the package installation for the compilation of the c++ function?

Rstan::expose_stan_functions inside a package?

General

bgoodri January 21, 2019, 4:31pm 2

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Rstan::expose_stan_functions inside a package?

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