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R’s working directory

October 3, 2008
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R’s working directory

Do you usually start R with a desktop icon or some other shortcut? Are you tired of using setwd and getwd each time after you start R to get the working directory correctly? If so, then your days of suffering might be just coming to an end. Having the working directory set correctly is very

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rgraph6 on R-Forge

September 4, 2008
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rgraph6 on R-Forge

I have moved my rgraph6 R package to R-Forge. R-Forge is a website that facilitates development of R packages by providing services for version control (through Subversion), automatic checking and building of the packages including binaries for Windows and MacOS, as well as for collaboration with other R users/developers. The rgraph6 package has been already

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UseR!2008 aftermath

August 30, 2008
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UseR!2008 aftermath

Earlier in August I was on the R user conference which this year took place in Dortmund. It was a quite an exciting event gathering around 500 people from around the globe and featuring 170 presentations and talks. Topics varied from new developments in the R system, newly implemented statistical methods as well as plethora

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Design Flaws in R #2 — Dropped Dimensions

August 19, 2008
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Design Flaws in R #2 — Dropped Dimensions

In a comment on my first post on design flaws in the R language, Longhai remarked that he has encountered problems as a result of R’s default behaviour of dropping a dimension of a matrix when you select only one row/column from that dimension. This was indeed the design flaw that I was going to

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High-performance computing in R at useR! 2008

August 12, 2008
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High-performance computing in R at useR! 2008

The useR! 2008 meeting is about to commence. Although I am not able to go this year I will be keeping a close eye on the talks and slides that (I assume) will be posted.  Last years useR! meeting (which … Continue reading →

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Design Flaws in R #1 — Reversing Sequences

August 6, 2008
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Design Flaws in R #1 — Reversing Sequences

The R language for statistical computing has become the standard for academic statistical research, for the very good reason that it’s better than the alternatives. It’s far from perfect however. I could come up with a long “wish list” of desired features it lacks, but that’s not what I’ll do in this series of posts.

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maps of Poland in R

June 23, 2008
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maps of Poland in R

Bogdan Taranta (website in Polish) is developing a set of functions for drawing administrative maps of Poland. I wrote similar functionality for myself already some time ago, but only for voivodships, i.e. top-level administrative units, and also in a rather low resolution. Bogdan’s contribution seems to contain all levels, at high resolution, and including the

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One R tip a day

June 21, 2008
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One R tip a day

I just encountered this website http://onertipaday.blogspot.com/: One R tip per day. Very nice collection of R tips.

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S3 vs S4, efficiency issues

May 23, 2008
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S3 vs S4, efficiency issues

While developing some new simulation code with S4 system I stumbled upon some big difficulties in terms of computational efficiency. That lead me to diging into archives of Rhelp and Rdevel looking for clues. I found some interesting threads that address almost exactly the same problems that I do. Read for yourself here and here,

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JAGS 1.0.2 is released

May 9, 2008
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JAGS 1.0.2 is released

JAGS 1.0.2 is now out. This is a patched release for the stable version, so there are no major changes in library functionality.   The major changes are: Memory leaks fixed. The rjags package now runs on Windows. A binary version … Continue reading →

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