Romain and Dirk:
Thanks for your help and patience!
Søren
-Original Message-
From: Dirk Eddelbuettel [mailto:[email protected]]
Sent: 31. maj 2013 13:24
To: Søren Højsgaard
Cc: Romain Francois; [email protected]
Subject: Re: [Rcpp-devel] Turning a vector into a matrix
On 31 May 2013 at 10:28, Søren Højsgaard wrote:
| Romain,
|
| Perhaps I now see the light at the end of the tunnel (hope it is not a train
comming against me!): If I understand this correctly, the following
|
| > template
| > Matrix vec2matrix2(Vector x, int nrow, int ncol) {
| >return Mat
Cc: [email protected]
Subject: Re: [Rcpp-devel] Turning a vector into a matrix
Ah ok, so you want to use this from R, I would suggest to Rcpp::export a
dispatcher, something like this:
#include
using namespace Rcpp ;
// the template
template
Matrix vec2matrix__impl(Vect
r 1
Error in Rcpp::sourceCpp("./util.cpp") :
Error 1 occurred building shared library.
-Original Message-
From: [email protected]
[mailto:[email protected]] On Behalf Of
Romain Francois
Sent: 31. maj 2013 11:22
To: rcpp-deve
From: [email protected]
[mailto:[email protected]] On Behalf Of Romain
Francois
Sent: 31. maj 2013 11:22
To: [email protected]
Subject: Re: [Rcpp-devel] Turning a vector into a matrix
Hello Søren,
This is easy templat
library.
-Original Message-
From: [email protected]
[mailto:[email protected]] On Behalf Of Romain
Francois
Sent: 31. maj 2013 11:22
To: [email protected]
Subject: Re: [Rcpp-devel] Turning a vector into
ow, int ncol) {
return IntegerMatrix(nrow, ncol, x.begin());
}
Any help would be more than welcome.
Best regards
Søren
-Original Message-
From: Dirk Eddelbuettel [mailto:[email protected]]
Sent: 31. maj 2013 03:01
To: Søren Højsgaard
Cc: [email protected]
Subject: Re: [Rcpp-devel
.ac.at
Subject: Re: [Rcpp-devel] Turning a vector into a matrix
Soren,
You missed the most appropriate constructor:
template
Matrix( const int& nrows_, const int& ncols, Iterator start ) ;
With that we just do this:
R> Rcpp::sourceCpp('/tmp/soren.cpp')
R>
Soren,
You missed the most appropriate constructor:
template
Matrix( const int& nrows_, const int& ncols, Iterator start ) ;
With that we just do this:
R> Rcpp::sourceCpp('/tmp/soren.cpp')
R> soren(1:4,2,2)
[,1] [,2]
[1,]13
[2,]24
R>
and the file s
Dear all
Apologies for a trivial question. I want to turn the vector
vec <- 1:4
into a matrix
1 3
2 3
I do:
src1 <-'
NumericVector vec(vec_);
NumericMatrix mat( as(nrow_), as(ncol_) );
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