[Rcpp-devel] [ANN] RcppArmadillo 0.3.920.1

Dirk Eddelbuettel edd at debian.org
Tue Oct 1 14:15:34 CEST 2013

Forgot to post this yesterday -- we also have a new RcppArmadillo on CRAN
which contains of number of enhancements by Conrad to Armadillo, and very
nice work by Romain tieing into recent changes in Rcpp: we now have efficient
passing of data via 'const ref' (rather than, ahem, copies) from R directly
into the core Armadillo data structures.

What follows below is from my blog at


where it is posted with links.

Thanks, Dirk

 Mon, 30 Sep 2013                                                           
 RcppArmadillo 0.3.920.1                                                
 Along with the Rcpp 0.10.5 release yesterday, a new minor release      
 0.3.920.1 of RcppArmadillo came out. It is based on Conrad's Armadillo 
 3.920.0 plus a minor fix, and uses some of the new Rcpp features. Both 
 package is now on CRAN and also in Debian.                             
 This releases contains both a nice set of new Armadillo features as    
 well as some nice additions to RcppArmadillo, due again mostly to      
 Romain. Some of the changes tie into the changes changes in Rcpp       
 0.10.5 as for example the ability to pass const and const ref more     
 efficiently (and we seem to have forgotten an entry in the NEWS file). 
 The complete list of changes is below.                                 
     Changes in RcppArmadillo version 0.3.920.1 (2013-09-27)            
     * Upgraded to Armadillo release Version 3.920.1 (Agencia Nacional  
          * faster .zeros()                                             
          * faster round(), exp2() and log2() when using C++11          
          * added signum function: sign()                               
          * added move constructors when using C++11                    
          * added 2D fast Fourier transform: fft2()                     
          * added .tube() for easier extraction of vectors and subcubes 
            from cubes                                                  
          * added specification of a fill type during construction of   
            Mat, Col, Row and Cube classes, eg. mat X(4, 5,             
     * Initial implementation of wrap<subview>                          
     * Improved implementation of as<>() and wrap() for sparse matrices 
     * Converted main vignette from LaTeX style minted to lstlisting    
       which permits builds on CRAN; removed set BuildVignettes: FALSE. 
 Courtesy of CRANberries, there is also a diffstat report for the most  
 recent release As always, more detailed information is on the          
 RcppArmadillo page. Questions, comments etc should go to the           
 rcpp-devel mailing list off the R-Forge page.                          

Dirk Eddelbuettel | edd at debian.org | http://dirk.eddelbuettel.com

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