RcppArmadillo 0.2.30 (and 0.2.29)

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A few days ago, Conrad Sanderson
released the first pre-release version of what will be
Armadillo 2.4.*, giving it the
2.3.91 release handle. We folded this into
release 0.2.30, with Romain making a few adjustments to our template
structure to accomodate Conrad’s underlying changes in
Armadillo itself.

Armadillo is a wonderfully
expressive (thanks to clever modern template programming), powerful yet
simple-to-use C++ library for linear algebra, making expressions in C++ as
easy as writing in Matlab or R. By deploying our seamless
Rcpp glue
between R and C++,
brings this nice C++ library to R users.
The CRAN page for RcppArmadillo
now lists ten packages using the

There was also an earlier bug-fix release 0.2.29 which I had not blogged
about separately. The NEWS entries summarising the changes for both are below:

0.2.30  2011-11-19

    o   Upgraded to Armadillo test release 2.3.91 "Loco Lounge Lizard (Beta 1)"

          * added shorter forms of transposes: .t() and .st()
          * added optional use of 64 bit indices, allowing matrices to have
            more than 4 billion elements
          * added experimental support for C++11 initialiser lists
          * faster pinv()
          * faster inplace transpose
          * bugfixes for handling expressions with aliasing and submatrices
          * refactored code to eliminate warnings when using the Clang C++
          * .print_trans() and .raw_print_trans() are deprecated 

0.2.29  2011-09-01

    o   Upgraded to Armadillo release 2.2.3

          * Release fixes a speed issue in the as_scalar() function.

Courtesy of
CRANberries, there
are also diffstat reports
for 0.2.30 relative to 0.2.29
for 0.2.29 relative to 0.2.28.
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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