August 21, 2014

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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 (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 Eigen::Dynamic>

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

  • 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.
Please report excessive re-aggregation in third-party for-profit settings.

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