Blog Archives

RPostgreSQL 0.2-0, 0.2-1 and an unsung Open Source hero

November 21, 2011
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RPostgreSQL goes back to a topic suggestion I had made for the Google Summer of Code 2008, and specifically for the R Project participation that year. And Sameer Kumar Prayaga (whom I then mentored for the project) did a fine job that summer putting t...

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RcppArmadillo 0.2.30 (and 0.2.29)

November 20, 2011
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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 RcppArmadillo release 0.2.30, with Romain making a few adjustments to our template stru...

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Rcpp talk at Seattle RUG next month

November 6, 2011
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The Seattle R User Group was kind enough to invite me to give a talk about R, C++ and Rcpp. So if you can make it to the Thomas building of the Fred Hutchinson Cancer Research Center in Seattle, WA, on December 7, I would love to see you there. I ha...

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Reminder: One week til Rcpp class in San Francisco

October 1, 2011
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Just a quick note to remind everyone that the Rcpp class in San Francisco, which I am holding together with Revolution Analytics, will take place a week from today. We are happy to report that the number of registrations has met our initial target...

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Rcpp 0.9.7

September 30, 2011
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A fresh maintenance release version 0.9.7 of Rcpp went onto CRAN and into Debian earlier today. This release contains two contributed fixes. The first, suggested by Darren Cook via the rcpp-devel mailing list, corrects how we had set up excepti...

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digest 0.5.1

September 21, 2011
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A new version of the digest package (which generates hash function summaries for arbitrary (and possibly nested) R objects using any of the standard md5, sha-1, sha-256 or crc32 algorithms) is now on CRAN. Bryan Lewis, who is doing very stuff with ...

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littler 0.1.5

September 17, 2011
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Brown-bag release time for littler. One of the minor cleanups in the 0.1.4 release from Thursday actually introduced a nasty little bug as you can't call Rf_KillAllDevices() when you do not have any graphics device. Doh. So with apologies for the l...

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littler 0.1.4

September 15, 2011
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Matthias Klose, the tireless force behind the Debian / Ubuntu gcc, python, and what have you packages, sent me a minimal patch to let littler build when the ld linker uses the --as-needed option (as Ubuntu builds now do): all it took was a little reor...

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RQuantLib 0.3.8

September 12, 2011
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A bug-fix release RQuantLib 0.3.8 is now on CRAN and in Debian. RQuantLib combines (some of) the quantitative analytics of QuantLib with the R statistical computing environment and language. Thanks to Helmut Heiming who noticed a side-effec t f...

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Faster (recursive) function calls: Another quick Rcpp case study

September 8, 2011
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There was another question recently on StackOverflow that I had meant to discuss in a follow-up post here. User deltanovember asked about slow recursive functions and used the very classic Fibonacci number as an example. To recap, Fibonacci number a...

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