RcppArmadillo 0.4.500.0

November 2, 2014

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

A few days ago, Conrad provided another minor release of Armadillo. Once again, I had created a GitHub-only pre-release of his pre-release which was tested against (then) all ninety (!!) CRAN dependents of our RcppArmadillo package, providing a further test for Conrad’s code and uploaded RcppArmadillo 0.4.500.0 to CRAN and Debian once his release was finalized.

The few changes from his end are summarized below; our end also includes an update / extension to the sample() method provided by Christian Gunning — and used to great effect in the excellent Rcpp Gallery post by Jonathan Olmsted.

Changes in RcppArmadillo version 0.4.500.0 (2014-10-30)

  • Upgraded to Armadillo release Version 4.500 ("Singapore Sling")

    • faster handling of complex vectors by norm()

    • expanded chol() to optionally specify output matrix as upper or lower triangular

    • better handling of non-finite values when saving matrices as text files

  • The sample functionality has been extended to provide the Walker Alias method (including new unit tests) via a pull request by Christian Gunning

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.

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