Finally, I managed to setup a GitHub repository. From now on, the latest developer snapshot of my sjPlot-package will be published right here: https://github.com/sjPlot/devel. Please post issues there, download the latest developer build for testing purposes or help developing the wiki-page with examples for package usage ... [Read more...]

Shortly after I prepared the bug-fix / maintenance release 0.3.2.0.3 of RcppEigen, the code based was updated to the recent Eigen release 3.2.1 by Doug Bates. I wrapped this up in release 0.3.2.1.0 of RcppEigen. The next day, Brian Ripley noticed a... [Read more...]

How's that fried pickle sandwich treating you?  Perhaps your taste in R  functions are less bizarre than your taste in R commands?Now you can easily find out using this new shiny app!  In this post I use the R function frequency table co... [Read more...]

The Matlab syntax for creating matrices is pretty and convenient. Here is a 2x3 matrix in Matlab syntax where , marks a new column and ; marks a new row:

<div><pre>[<span>1</span>, <span>2</span>, <span>3</span>;
 <span>4</span>, <span>5</span>, <span>6</span>]
</pre></div>

Here is how to create the corresponding matrix in R:

<div><pre>matrix(c(<span>1</span>,<span>4</span>,<span>2</span>,<span>5</span>,<span>3</span>,<span>6</span>), <span>2</span>, <span>3</span>)
</pre></div>

<div><pre><span>##      [,1] [,2] [,3]</span>
<span>## [1,]    1    2    3</span>
<span>## [2,]    4    5    6</span>
</pre></div>

Functional but not as pretty, plus the default is ... [Read more...]

R-core member Peter Dalgaard announced yesterday that R 3.0.3 is now available. This is the final update to the R 3.0 series, and includes several small but handy new features and minor bug fixes. Improvements include support for writing very large tables to disk, better handling of foreign-language calendar dates, and more ... [Read more...]

Alright, let's test some parallelization functionalities in R.The machine:MacBook Air (mid-2013) with 8 GB of RAM and the i7 CPU (Intel i7 Haswell 4650U). This CPU is hyper-threaded, meaning (at least that's my understanding of it) that it has two... [Read more...]

To the R users based in the Philippines, there will be upcoming meetup, here are the details:topics: Markov Switching Models in R           by Ohly Santos           How to use the op... [Read more...]

Final day of our workshop Advances in Scalable Bayesian Computation already, since tomorrow morning is an open research time ½ day! Another “perfect day in paradise”, with the Banff Centre campus covered by a fine snow blanket, still falling…, and making work in an office of BIRS a dream-like moment. Still ... [Read more...]

My latest update to The Popularity of Data Analysis Software is an attempt to use blog counts to estimate the popularity of analytics software. While I was able to greatly broaden the coverage of packages when studying job data, I … Continue reading → [Read more...]

I’ve written before about importing tabular text files into R, and here comes some more. This is because I believe (firmly) that importing data is the major challenge for beginners who want to analyse their data in R. What is the most important thing about using any statistics software? ... [Read more...]

In the R programming language, the random number generator (RNG) is seeded each session using the current time and process ID. Via the magic of the popular Mersenne Twister PRNG, the values stored in .Random.seed are used sequentially each time … Continue reading → [Read more...]

How safe is Mexico? That is a frequent question people ask me. There is even  website about it  (see this blog post). So I’ve decided it was time to go one step further and make an interactive map (click here for full screen) of poverty and crime in Mexico. ... [Read more...]

by Joseph Rickert In addition to the considerable benefit of being able to meet other, like-minded R users face-to-face, R user groups fill a niche in the world of R education by providing a forum for communicating technical information in an informal and engaging manner. Conferences such as useR!, JSM ... [Read more...]

Dear R users, I am happy to officially announce a new website called R-users.com. The idea of the site is that community members will invite other R users to join them in their R projects, conferences, and work places. This site is a “job board” for R users, hosting ... [Read more...]

Within 2 weeks on Thursday, March 20, The RBelgium R user group is holding its next Regular meeting in Brussels for which this is the schedule: ** Analysis and visualisation of climate data from the atmospheric model ALADIN using the Rfa package... [Read more...]

We have now gone over the midpoint of our workshop Advances in Scalable Bayesian Computation with three talks in the morning and an open research or open air afternoon. (Maybe surprisingly I chose to stay indoors and work on a new research topic rather than trying cross-country skiing!) If I ... [Read more...]

Datasets come sometimes with predictors that take an unique value across samples. Such uninformative predictor is more common than you might think. This kind of predictor is not only non-informative, it can break some models you may want to fit to your data (see example below). Even more common is ... [Read more...]

Assign n Email Addresses to x Cells, Intrinsically Assign n Email Addresses to x Cells, IntrinsicallySample Use Case:Marketing requests that an email address list be divided randomly into a given number of cells so that each cell would receive a different version of copy. Below is a technique that ... [Read more...]

I teach some introductory stats classes with SPSS, and one of the frustrations for me is that you have to pay an extra wad of cash to do any bootstrapping. It’s not exactly the complete analysis solution that you might … Continue reading → [Read more...]

And here is the second day of our workshop Advances in Scalable Bayesian Computation gone! This time, it sounded like the “main” theme was about brains… In fact, Simon Barthelmé‘s research originated from neurosciences, while Dawn Woodard dissected a brain (via MRI) during her talk! (Note that the BIRS ... [Read more...]