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K-means Clustering (from “R in Action”) 8 Aug 2013 | 03:52 am

In R’s partitioning approach, observations are divided into K groups and reshuffled to form the most cohesive clusters possible according to a given criterion. There are two methods—K-means and partit...

Analyzing Your Data on the AWS Cloud (with R) 22 Jul 2013 | 10:06 pm

Guest post by Jonathan Rosenblatt Disclaimer: This post is not intended to be a comprehensive review, but more of a “getting started guide”. If I did not mention an important tool or package I apolo...

Tailor Your Tables with stargazer: New Features for LaTeX and Text Output 15 Jul 2013 | 05:46 pm

Guest post by Marek Hlavac Since its first introduction on this blog, stargazer, a package for turning R statistical output into beautiful LaTeX and ASCII text tables, has made a great deal of progre...

Creating good looking survival curves – the ‘ggsurv’ function 5 Jul 2013 | 03:49 am

This is a guest post by Edwin Thoen Currently I am doing my master thesis on multi-state models. Survival analysis was my favourite course in the masters program, partly because of the great survival...

Top 100 R packages for 2013 (Jan-May)! 14 Jun 2013 | 12:30 am

What are the top 100 (most downloaded) R packages in 2013? Thanks to the recent release of RStudio of their “0-cloud” CRAN log files, we can now answer this question (at least for the months of Jan ti...

Answering “How many people use my R package?” 12 Jun 2013 | 05:04 am

The question “How many people use my R package?” is a natural question that (I imagine) every R package developer asks himself at some point or another. After many years in the dark, a silver lining h...

Log Transformations for Skewed and Wide Distributions 28 May 2013 | 02:38 am

This is a guest article by Nina Zumel and John Mount, authors of the new book Practical Data Science with R. For readers of this blog, there is a 50% discount off the “Practical Data Science with R” b...

R 3.0.1 is released 20 May 2013 | 10:37 pm

R 3.0.1 (codename “Good Sport”) was released last week. As mentioned earlier by David, this version improves serialization performance with big objects, improves reliability for parallel programming a...

R 3.0.0 is released! (what’s new, and how to upgrade) 3 Apr 2013 | 09:28 pm

A few hours ago Peter Dalgaard (of R Core Team) announced the release of R 3.0.0!  Bellow you can read the changes in this release. One of the features worth noticing is the introduction of long vecto...

Updating R (on Windows) through a menu-bar: installr 0.9 released on CRAN 1 Apr 2013 | 09:06 pm

In preparation for the upcoming release of R 3.0.0, a new release 0.9 of installr is now on CRAN. The package can be installed and loaded using: # installing/loading the package: if(!require(installr)...

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