[Rcpp-devel] Embedding RInside in C++ project

[Ulf Mertens]

Hi,

thanks for your mail.

I don't have to use cmake for my project. It's totally fine to use plain
Makefiles for me.

Sure, I can release this. But first, I want to optimize the code a bit. For
instance, I am working with Eigen matrices and vectors in my
c++ program but I don't know how to convert a Rcpp::NumericVector to say
Eigen::VectorXd. Right now, I first convert to std::vector with Rcpp::as<>
and then to Eigen::VectorXd with Eigen::Map. There is certainly a better
way but I didn't figure it out yet.

Ulf


On Thu, Jul 23, 2015 at 4:15 PM, Dirk Eddelbuettel <edd at debian.org> wrote:

>
> Hi Ulf,
>
> On 23 July 2015 at 15:53, Ulf Mertens wrote:
> | I am working on a project in C++ where I have to use Bayesian Statistics
> quite
> | extensively. I coded my own Metropolis Hasting Sampler but since it is
> not
> | working that well, I wanted to call rstan from within C++ via RInside. I
> | already wrote the appropriate RInside/Rcpp code but I don't know how to
> rewrite
> | my CMakeLists.txt file to make it work.
>
> Sounds nice. Will you release this?
>
> | I looked at the CMakelists.txt file in the standard/examples folder but
> I don't
> | know enough about cmake to rewrite it for my own project.
> |
> | My project consists of 3 source files and 2 header files and I am
> working with
> | Eclipse Mars. Here is my current file:
> |
> | cmake_minimum_required(VERSION 2.6)
> |
> | project(XX)
> |
> | # use C++11
> | set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
> |
> | add_executable(${PROJECT_NAME}
> |   global.h
> |   model.h
> |   model.cpp
> |   run.cpp
> |   mcmc.h
> |   mcmc.cpp
> |   )
> |
> | What do I have to change (in the file or in Eclipse itself) to make it
> work?
>
> I wrote and support the 'plain old Makefile(s)' and can help with this.
>
> CMake support was added by Peter (CC'ed) who may be able to help you with
> this.
> My usual approach for 'non-Make' builds is to make it work with make, and
> then carry the changes over.
>
> Dirk
>
> --
> http://dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org
>
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