Hi Dirk and Romain,
Thanks for your help. I see now that I was treating the NumericMatrix
declarations as copy constructors, but rather should be thinking of them
as wrapper objects, and I need to be careful to only assign one Rcpp
variable to each SEXP. Also, a good catch of the difference
Le 25/05/10 04:38, Dirk Eddelbuettel a écrit :
Hi Erica,
Thanks for your interest in Rcpp, and for posting on the list!
On 24 May 2010 at 20:58, Yi-Hsin Erica Tsai wrote:
| Hi,
|
| I've just started using Rcpp with the hopes of speeding up some R loops
| through replacement with C++ code. I'
Hello,
This has nothing to do with default arguments, wrappers, etc ... on the
R side.
The issue is the difference between :
> typeof( matrix((1:9), 3, 3) )
[1] "integer"
> typeof( matrix(seq(1,9)^2, ncol=3) )
[1] "double"
The constructor of NumericMatrix has no choice but to cast the input
Hi Erica,
Thanks for your interest in Rcpp, and for posting on the list!
On 24 May 2010 at 20:58, Yi-Hsin Erica Tsai wrote:
| Hi,
|
| I've just started using Rcpp with the hopes of speeding up some R loops
| through replacement with C++ code. I've been struggling with
| understanding the beh
Hi Erica,
Thanks for your interest in Rcpp, and for posting on the list!
On 24 May 2010 at 20:58, Yi-Hsin Erica Tsai wrote:
| Hi,
|
| I've just started using Rcpp with the hopes of speeding up some R loops
| through replacement with C++ code. I've been struggling with
| understanding the beh
Sorry, I forgot to mention my installation details:
I'm running R version 2.11.0, Rcpp 0.8.0, on Ubuntu Hardy Heron.
Best,
--Erica
On 5/24/2010 8:58 PM, Yi-Hsin Erica Tsai wrote:
Hi,
I've just started using Rcpp with the hopes of speeding up some R loops
through replacement with C++ code. I'v
Hi,
I've just started using Rcpp with the hopes of speeding up some R loops
through replacement with C++ code. I've been struggling with
understanding the behavior of the NumericMatrix datatype and more
generally how to pass matrices between R and C++.
I seem to be getting bizarre behavior
