[Rcpp-devel] how to use R distributions while using RcppArmadillo

[Dirk Eddelbuettel]

On 16 September 2016 at 16:59, Amina Shahzadi wrote:
| Hello Friends
| 
| I tried to find that how we can use pnorm(), dpois() etc. using arma library.
| It is easy to use using Rcpp. Would anybody help ?

Here you go:

R> library(Rcpp)
R> cppFunction("arma::vec foo() { return as<arma::vec>( rnorm(5) ); }", depends="RcppArmadillo")
R> set.seed(42); foo()
          [,1]
[1,]  1.370958
[2,] -0.564698
[3,]  0.363128
[4,]  0.632863
[5,]  0.404268
R> 
R> set.seed(42); rnorm(5)
[1]  1.370958 -0.564698  0.363128  0.632863  0.404268
R>

There are literally hundreds of more complex examples out there.  Just search.

Dirk

-- 
http://dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org