,){
const int n = Rcpp_x.nrow();
const int p = Rcpp_x.ncol();
NumericMatrix Rcpp_x(R_x);
Map x(Rcpp_x.begin(),n,p);
MatrixXf x_cen = x.cast();
Best,
>On Sat, Mar 10, 2012 at 6:05 PM, Kaveh Vakili wrote:
>> Hi Steve,
>>
>> Timing:
>>
>&g
>to me, but I've never measured...
>
>Best,
>-Jared
>
>On Sat, Mar 10, 2012 at 8:09 PM, Dirk Eddelbuettel wrote:
>>
>> On 11 March 2012 at 01:33, Kaveh Vakili wrote:
>> |
>> | >Don't take this the wrong way, but we are not here to debug or re
rge is it,
typically?
I'm was not even so enclined to post my code
--my question is more general.
Best,
>
>On 11 March 2012 at 01:05, Kaveh Vakili wrote:
>| Hi Steve,
>|
>| Timing:
>|
>| i use:
>|
>| int start_s=clock();
>| ..
>| ..
>| int
n,0,n-1);
VectorXf urd = VectorXf::Random(p).array().abs();
for(i=0;iA;
for(int i=1;iHi Kaveh,
>
>On Sat, Mar 10, 2012 at 5:58 PM, Kaveh Vakili wrote:
>> Hi all,
>>
>> the same code when timed in cpp (i.e. without any interfacing with R)
>&g
Hi all,
the same code when timed in cpp (i.e. without any interfacing with R)
runs about 2 times faster than when called from R and timed from R's
system.time(). In this type of overhead normal or is it a sign i'm doing
something not optimally?
Best,
__
Hi all,
i have a compiling cpp code that i want
to use in R.
NumericMatrix Rcpp_x(R_x);
Map x(Rcpp_x.begin(),n,p);
is there a way, with rcpp, to map R_x to a MatrixXf object?
Best,
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Thanks for the advice Dirk,
>
>Kaveh,
>
>If you are having problems with things like matrix indexing I would recommend
>a somewhat more incremental approach:
>
> pass a matrix from R, find the maximum element and return it
>
> pass a matrix from R, find the min and maximum elements and
Hi list,
I'm trying to learn inline by translating snippets of c++ code from
the book "Numerical Recipes".
in page 44-45, there is a c++ code to perform Gauss-Jordan elimination of a
matrix (see below). I understand that they have a large template of additional
operator/function/class (it is o
require( Rcpp )
require( inline )
f.Rcpp <- cxxfunction( signature( x = "matrix" ), '
NumericMatrix input( x ) ;
NumericMatrix output = clone( input ) ;
int nr = input.nrow(), nc = input.ncol() ;
NumericVector tmp( nr );
for( int i=0; i
>On 31 October 2010 at
with
>iterators (with v as the target, not pdB). Telling v's constructor the size to
>pre-allocate would be good, too.
>
>Davor
>
>
>On 2010-10-27, at 3:22 PM, Kaveh Vakili wrote:
>
>> trying to feed the beast something line by line (if this works to the end it
>
Hi,
i tried to inline the code for f.Rcpp found here:
http://article.gmane.org/gmane.comp.lang.r.rcpp/851/match=matrix+inline
I get a mysterious bug. I'l not sure what's wrong with the code, can anyone
comment ?
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trying to feed the beast something line by line (if this works to the end it
may become an instance of quickselect() :)
int k = Rcpp::as(kr);
NumericVector pdA(pdAr);
int n = pdA.size();
//this:
//double *pdB = new double [n] ;
//becomes
else equal.
In other words, inline seems more convenient/flexible than using Rinside. Does
this convenience comes with large costs ?
The HPC slides/FAQ do not seem to address this (maybe the difference is
irrelevant).
>On 27 October 2010 at 22:24, Kaveh Vakili wrote:
>| In trying to
In trying to educated my self, i'm browsing through the abysses
of the codes with inline taggs in the ML.
http://article.gmane.org/gmane.comp.lang.r.rcpp/611
I tried to run fx5 (exactly as is shown there) but also any of the codes from
the tread (fx2,...,) gives the same error message:
Error
thank you very much.
>
>On 27 October 2010 at 21:25, Kaveh Vakili wrote:
>| Are the archives of this devel somehow searchable ?
>| If yes how ?
>
>Google, rseek.org, etc may work well enough. However, you are not limited by
>the web view offered of R-Forge -- the list a
Are the archives of this devel somehow searchable ?
If yes how ?
Also, my questions essentially relate to 'inline', Am i at the right place ?
If not can you advise ?
thanks,
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