Some interesting ggplot2 tutorials for the social sciences @ Code à la Mode [Read more...]

Many R packages/tools have come out recently for doing ecology and evolution. All of the below were described in Methods in Ecology and Evolution, except for spider, which came out in Molecular Ecology Resources. Here are some highlights. mvabund pap... [Read more...]

Is it just me, or does the performance of the foreach package with a doSNOW backend operating on a socket grid suck?Here at work, I am helping to setup a cluster of Windows machines for distributed R processing.  We have lots of researchers runnin... [Read more...]

Here at work I've been in the business of developing webapps using R as the backend computational framework.  The list of parts to get this running is pretty lightweight, just:R Apache 2rApacheI'm not going to cover how to set these things up here... [Read more...]

I had such a blast presenting my tutorial on Rook yesterday. Thanks go out to all who attended! All the slides are online here and I’ll be updating my RookTutorial github project with all the great suggestions I got from the attendees. Also, check back soon as I’m ... [Read more...]

Sometimes the story isn't what is a trend, but rather what is not a trend. In this second installment about body weight in the U.S., listing what doesn't seem to be contributing factors will help narrow down what might actually be the p... [Read more...]

AbstractVarious approaches exist to relate saturated hydraulic conductivity (Ks) to grain-size data. Most methods use a single grain-size parameter and hence omit the information encompassed by the entire grain-size distribution. This study compares two data-driven modelling methods—multiple linear regression and artificial neural networks—that use the entire grain-size distribution ... [Read more...]

In R we’ll generate similar continuous distributions for two groups and give a brief overview of statistical tests and visualizations to compare the groups. Though the fake data are normally distributed, we use methods for various kinds of continuous distributions. … Continue reading → [Read more...]

In case you missed them, here are some articles from May of particular interest to R users. R tops the annual KDNuggets Data Mining Software poll for the first time. R 2.15.1 is scheduled for June 22. (Revolution R Enterprise 6, released on June 5, is based on 2.14.2.) A tutorial uses R, Hadoop, and ... [Read more...]

How to order bars in bar graph (Stack Overflow FAQ) [Read more...]

The open source R software for analytics has a reputation for being hard to learn. It certainly can be, especially for people who are already familiar with similar packages such as SAS, SPSS or Stata. Training and documentation that leverages … Continue reading → [Read more...]

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In my last blog I'm following you in Twitter...are you following me back? I show you how to use the Twitter APIs to get a list of the people that you follow but doesn't follow you back.This time, I want to extend the tool as I installed the ... [Read more...]

Hi, our group of R users from INSEE, aka FLR, meets monthly in Paris. Next meeting is on Wed 13 (tomorrow), 1-2 pm, room 539 (an ID is needed to come in,  map to access INSEE R), about ggplot2 and parallel computing. Since the first meeting in February, presentations have included hot ... [Read more...]

6/18: A follow-up to this post is now available here.Recent DiscoveriesWhen I was a diplomat, I was always interested in the Wikileaks cables and what could be done with them. Unfortunately, I never got a chance to look at the site in depth, due to security policies. Now that the ... [Read more...]

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http://www.twotorials.com/Heres a fun little page!About 90 two minute tutorials (twotorials, haha) on various things in R!From "what does object oriented programming [...] mean" to calculating the number of days youve been alive.The guy has an amusing voice too!!Great for newbies to R I should ... [Read more...]

PCA and ggplot2 to recognise gestures (via David Chudzicki’s Blog: Visualizing ChaLearn Gestures Test Data) [Read more...]

Using PluginR you can produce interactive slideshows in Tiki running R code in some slides. This is possible thanks to the integrated jquery.s5 slideshow system, which was introduced already back in Tiki 7.0 and improved until its present form in Tiki... [Read more...]

R is hot and amazing. Tiki is too And with PluginR, we can easily place in simple or advanced web reports any R code, in a similar fashin to what can be achieved with other longer combinations (Sweave, Knitr, ... and latex). For instance, I tried a few days ago to ... [Read more...]