RcppArmadillo 0.400

January 6, 2014

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

A new major release 4.000 of Armadillo
came out out yesterday morning. This is a new stable release by
Conrad with a new major
number, and it brings a few nice changes as detailed below.
I rolled up RcppArmadillo
version 0.400 yesterday morning, and following a little bit of discussion
this version is now on CRAN
and in Debian.

The complete list of changes is below.

Changes in RcppArmadillo version 0.4.000 (2014-01-05)

  • Upgraded to Armadillo release Version 4.000 (Feral Steamroller)

    • added eigen decompositions of sparse matrices:
      eigs_sym() and eigs_gen() [ but this requires
      linking against ARPACK which RcppArmadillo as a
      pure-template package does not do, and R is not linked against
      ARPACK either. ]

    • added eigen decomposition for pair of matrices: eig_pair()

    • added simpler forms of eig_gen()

    • added condition number of matrices: cond()

    • expanded find() to handle cubes

    • expanded subcube views to access elements specified in a vector

    • template argument for running_stat_vec expanded to accept vector types

    • more robust fast inverse of 4×4 matrices

    • faster divide-and-conquer decompositions are now used by default
      for eig_sym(), pinv(), princomp(), rank(), svd(), svd_econ()

    • the form inv(sympd(X)) no longer assumes that X is positive definite; use inv_sympd() instead

    • added MEX connector for interfacing Octave/Matlab with Armadillo matrices (contributed by George Yammine)

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.

This post by Dirk Eddelbuettel
originated on his Thinking inside the box blog.
Please report excessive re-aggregation in third-party for-profit settings.

To leave a comment for the author, please follow the link and comment on their blog: Thinking inside the box .

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