Blog Archives

Bioconductor 2.5 is out

October 29, 2009
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Bioconductor 2.5 is out

For all bioinformaticians and R users out there: the Bioconductor project  for the analysis and comprehension of genomic data is out! A lot of interesting new stuff! See the full announcement here.

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R 2.10.0 is Out!

October 26, 2009
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R 2.10.0 is Out!

The new R 2.10.0 is out! Get it from here. If you like take a look at these posts for some miscellaneous advices to make the upgrade easier. Fell free to contribute with suggestions about how to upgrade your R installation.

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The Elements of Statistical Learning

October 14, 2009
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The Elements of Statistical Learning

The Elements of Statistical Learning written by Trevor Hastie, Robert Tibshirani and Jerome Friedman is A-MUST-TO-READ for everyone involved in the data mining field! Now you can legally download a copy of the book in pdf format from the authors websit...

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R Flashmob #2

September 4, 2009
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R Flashmob #2

As I said before, I consider the R-Help mailing list an invaluable source of information if you want to get things done in R. Recently the stackoverflow website, a site where programmers can post and answer questions about a wide list of programming la...

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Locate the position of CRAN mirror sites on a map using Google Maps

August 5, 2009
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Locate the position of CRAN mirror sites on a map using Google Maps

Inspired by this post (suggested here by the always useful Revolutions blog), I attempted to plot the position of CRAN mirrors on a map taking advantage of the nice R package RgoogleMaps (check the dependencies!). Below the code: library(XML) # downlo...

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Rosetta Code

July 26, 2009
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Rosetta Code

Today I'd like to suggest the interesting Rosetta Code site:Rosetta Code is a programming chrestomathy site. The idea is to present solutions to the same task in as many different languages as possible, to demonstrate how languages are similar and diff...

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Remove files with a specific pattern in R

July 3, 2009
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Remove files with a specific pattern in R

A quick basic tip which can come in handy whether you need to rapidly remove files from a directory:junk <- dir(path="your_path", pattern="your_pattern") # ?dirfile.remove(junk) # ?file.removeClearly, for advanced needs, you can use system() and al...

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Set the significant digits for each column in a xtable for fancy Sweave output

June 26, 2009
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Set the significant digits for each column in a xtable for fancy Sweave output

This tip may be useful in the situations when you need to set the number of digits to print for the different columns in a matrix/data.frame to be outputted as a LaTeX table.  For example: #install.packages("xtable") #library(xtable) tmp <- m...

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Iran Election analyzed with R

June 19, 2009
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Iran Election analyzed with R

Here you can find a very interesting post depicting the R strengths in 'real-time statistics'. I'd like to use the occasion to thank David Smith for hosting the best, imho, blog on R!  Follow Him on Twitter: @revodavid .

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Replacing 0 with NA – an evergreen from the list

June 15, 2009
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Replacing 0 with NA – an evergreen from the list

This thread from the R-help list describe an evergreen tip that, at least once, is proved useful in R practice.

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