On Thu, Apr 14, 2011 at 10:00 AM, Cedric Ginestet <c.gineste...@googlemail.com> wrote: > Hi all, > > I am trying to pass on a boolean vector from R to C++. I have naively tried > the following: > > ################################ > src <- ' > using namespace Rcpp ; > using namespace std ; > int b = as<bool>(xb); > return wrap(b);' > cxxfun <- cxxfunction(sig=signature(xb="logical"), > body=src,plugin="Rcpp",verbose=TRUE) > cxxfun(b); > > Error in cxxfun(b) : expecting a single value > ############################### > > Is there an equivalent to IntegerVector or NumericVector for Boolean > variables or can I simply use the Rcpp::Vector template for this purpose?
In R a logical vector is an IntegerVector. You could transform it to a std::vector<bool> if you were particularly concerned about space but you would lose the ability to represent missing values. That is, elements of an R logical vector can be TRUE, FALSE or <NA> whereas the C++ bool type can only be true or false. _______________________________________________ Rcpp-devel mailing list Rcpp-devel@lists.r-forge.r-project.org https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
