A new upstream release of the Eigen C++ template
library for linear algebra was released a few days ago. And Yixuan Qiu did some
really nice work rolling this into a new
RcppEigen released
and then sent me a nice pull requent. The new version is now on
CRAN, and I will prepare a
Debian in a moment too.

Upstream changes for Eigen are
summarized in their changelog.
On the RcppEigen
side, Yixuan also rolled in some more changes on as() and
wrap() converters as noted below in the NEWS entry.

Changes in RcppEigen version 0.3.2.2.0 (2014-08-19)

• Updated to version 3.2.2 of Eigen

• Rcpp::as() now supports the conversion from R vector
  to “row array”, i.e., Eigen::Array

• Rcpp::as() now supports the conversion from
  dgRMatrix (row oriented sparse matrices, defined in Matrix package) to Eigen::MappedSparseMatrix

• Conversion from R matrix to Eigen::MatrixXd and
  Eigen::ArrayXXd using Rcpp::as() no longer gives
  compilation errors

Courtesy of CRANberries, there
are diffstat reports for the
most recent release.

Questions, comments etc about RcppEigen 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.
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