RcppArmadillo 0.2.26 and 0.2.27

July 23, 2011

(This article was first published on Thinking inside the box , and kindly contributed to R-bloggers)

Earlier this week, Conrad Sanderson issued a minor bug fix release 2.0.2 of his
Armadillo library which provides
templated C++ code for linear algebra. We wrapped that into a new
release 0.2.26 and shipped it to CRAN.
Due to it being summer and the otherwise
tirelesss human operator
behind the curtain being on a well-deserved vacation, it sat in the incoming
queue til this morning—but is now on CRAN.

Conrad did not rest either and just yesterday released version 2.1.91 as a
first step towards a new 2.2.0 release sometime soon. And also
yesterday, we wrapped that new version into
release 0.2.27. With
being back in full swing, we pushed it over there this morning and it already
made its way into the repository.

The NEWS entries summarising the changes—which are exclusively
upstream—are below:

0.2.27  2011-07-22

    o   Upgraded to Armadillo release 2.1.91 "v2.2 beta 1"

          * faster multiplication of small matrices
          * faster trans()
          * faster handling of submatrices by norm()
          * added economical singular value decomposition: svd_thin()
          * added circ_toeplitz()
          * added .is_colvec() & .is_rowvec()

0.2.26  2011-07-17

    o   Upgraded to Armadillo release 2.0.2 

          * fix for handling of conjugate transpose by as_scalar()
          * fix for handling of aliasing by diagmat()
          * fix for handling of empty matrices by symmatu()/symmatl()

Courtesy of
CRANberries, there
are also diffstat reports
for 0.2.27 relative to 0.2.26
for 0.2.26 relative to 0.2.25.
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.

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