[Rcpp-devel] Internals: how does DataFrame get initialized?
It also includes "DataFrame_generated.h", which contains automatically generated constructors with 1 to X (currently X=20) "Named" arguments. See it directly in the Subversion repo at R-Forge: https://r-forge.r-project.org/scm/viewvc.php/pkg/Rcpp/inst/include/Rcpp/?root=r$ Davor
On Wed, 29 Feb 2012, Darren Cook wrote:
I wanted to understand what this code [1] actually does:
std::vector<double> vt, vpx, vsz;
std::vector<std::string> vsrc, vtype;
...
Rcpp::DataFrame df = Rcpp::DataFrame::create(
Rcpp::Named("t", vt),
Rcpp::Named("type", vtype),
Rcpp::Named("src", vsrc),
Rcpp::Named("px", vpx),
Rcpp::Named("sz", vsz)
);
Rcpp::Named(x,y) was easy [2]: it makes a little object that just stores
references to the two variables.
Understanding Rcpp::DataFrame::create() was harder [3], with 5
constructors, none of which seem like they would do the job. Can someone
give me a pointer to what I should study next.
TIA,
Darren
[1]: Extracted from:
http://lists.r-forge.r-project.org/pipermail/rcpp-devel/2012-January/003345.html
[2]:
http://dirk.eddelbuettel.com/code/rcpp/html/Named_8h_source.html
http://dirk.eddelbuettel.com/code/rcpp/html/named__object_8h_source.html
[3]:
http://dirk.eddelbuettel.com/code/rcpp/html/DataFrame_8h_source.html
--
Darren Cook, Software Researcher/Developer
http://dcook.org/work/ (About me and my work)
http://dcook.org/blogs.html (My blogs and articles)
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