Dear All, I am using RcppArmadillo, and I am creating matrices in the C++ code (i.e., these are not matrices passed from R). The sizes of these matrices might need to increase dynamically during run time, with elements being added at the end. What is the recommended way of doing this:
a) Just insert elements as needed. E.g.: Y.insert_cols(Y.n_cols, the_new_thing); b) Create initial object. Double size of object (using resize) each time I run out of space. Copy the_new_thing to the appropriate place. I thought b) was a reasonable manual approach (e.g., Skiena, "The algorithm design manual, 2nd ed", p. 67), but I think I've read that for std::vector, a) (with push_back), is a better choice than b) (using reserve, not resize). For me, a) involves writing less code. Thanks, R. -- Ramon Diaz-Uriarte Department of Biochemistry, Lab B-25 Facultad de Medicina Universidad Autónoma de Madrid Arzobispo Morcillo, 4 28029 Madrid Spain Phone: +34-91-497-2412 Email: rdia...@gmail.com ramon.d...@iib.uam.es http://ligarto.org/rdiaz _______________________________________________ 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