rcpp

I am wondering if there is a Rcpp way to convert an element or iterator of const CharacterVector& to std::string . If I try the following code void as(const CharacterVector& src) { std::string glue; for(int i = 0;i < src.size();i++) { glue.assign(src[i]); } } a compiler-time error will occurred: no known conversion for argument 1 from ‘const type {aka SEXPREC* const}’ to ‘const char*’ So far, I use C API to do the conversion: glue.assign(CHAR(STRING_ELT(src.asSexp(), i))); My Rcpp version is 0.10.2. By the way, I do know there is a Rcpp::as . glue.assign(Rcpp::as<std::string>(src[i])); the

I'm currently working on an R package which uses C++ code and includes external libraries (dlib, boost and an optimization library developed in the group). We're using Rcpp to integrate R and C++, but the problem is the package always fails to compile, and none of the similar questions I've found out there have worked for me. The report generated by R CMD check is: * installing *source* package 'IRTppExperimental' ... ** libs *** arch - i386 c:/Rtools/mingw_32/bin/g++ -std=c++0x -I"C:/PROGRA~1/R/R-33~1.1/include" -DNDEBUG -I"C:/Users/Camilo/Documents/R/win-library/3.3/Rcpp/include" -I"d:

I created a R package which depends on Rcpp. A function in this package supposed to show printing statements at every n iterations. So I expect to see a new line on R console every few seconds. The odd thing is that when I run my function in R GUI, the cursor becomes a loading wheel and R "almost" freezes. The loading wheel disappear once after the computation is done. The minimal example of this situation is summarized as follow: library(inline) library(Rcpp) test <- cxxfunction( signature(), body= ' RNGScope scope; for (int i = 0; i < 100; i++) { sleep(1); // sleep one second at each

I'm trying to make a wrapper for some C-based sparse-matrix-handling code (see previous question ). In order to call the workhorse C function, I need to create a structure that looks like this: struct smat { long rows; long cols; long vals; /* Total non-zero entries. */ long *pointr; /* For each col (plus 1), index of first non-zero entry. */ long *rowind; /* For each nz entry, the row index. */ double *value; /* For each nz entry, the value. */ }; These correspond nicely to the slots in a dgCMatrix sparse matrix. So ideally I'd just point to the internal arrays in the dgCMatrix (after

I'm trying to build an R package which contains both C (in the form of .c files) and C++ code (in the form of .cpp files) using the Rcpp package as a dependency. I have a couple of questions. First, is it actually possible to do this? Can one call C scripts and C++ scripts that are in the same R package? If the previous is possible, how then does one properly register the functions in the C and C++ scripts. To help with this, I have set up a little example which is available on my GitHub page ( https://github.com/tpbilton/testrcpp ). I have used Rcpp.package.skeleton("testrcpp") to initialize