We're so excited here at REvolution Computing to announce that Robert Gentleman has joined our board of directors. Robert is one of the two originators of the R Project: a research project between Robert and Ross Ihaka in 1996 was the genesis of the R language. (Both Robert and Ross were profiled in an article in the New York...
R posts in other languages
- (line.)profiling mit Rprof + R.3.x – Performance von R-Skripten optimieren
- Operating on files with R: copy and rename
- 适合初学者的R语言教程
- SAS hat einen neuen Vergleich von SAS und R veröffentlicht
- 实现可重复的统计slides
- О связи между “утечкой мозгов” и объемом пассажирских перевозок
- Новая книга по основам прогнозирования (с использованием R)
- Двухфакторный дисперсионный анализ
- Revolution R Enterprise 6.2 mit neuen Funktionen für hoch performante Analysen auf Big Data
- Third Milano R net meeting: leave a comment
Mapping MA election results
The Swing State Project recently had some very interesting maps comparing last week’s election results from Massachusetts to 2008 presidential primary results. Their maps posted show some very interesting trends, but the maps themselves are lacking in information and the color schemes are pretty ugly. Using my own source data I recreated their election night
rgdal and other GIS-related packages for Mac OS X
CRAN contains ready-made binary packages for nearly all of its packages, but rgdal is one which I keep finding myself trying to install from source whenever I upgrade R. Compiled versions of rgdal, along with prerequisites and complements like the GDAL framework, GRASS, and even the old FFTW3 can be found at KyngChaos’s Wiki: http://www.kyngchaos.com/software/frameworks 
R Tutorial Series: Regression With Interaction Variables
Interaction variables introduce an additional level of regression analysis by allowing researchers to explore the synergistic effects of combined predictors. This tutorial will explore how interaction models can be created in R.Tutorial Files Before we...
Fluctuation plot using ggplot2 in R
Found this nice way to visually summarize contingency tables using ggplot2 in R on Hadley Wickham's ggplot2 cheat sheet. Using the same data in my previous post on making scatterplots in small multiples, I'll demonstrate how to use ggfluctuation() to m...
What to Expect?
In 2007, I was introduced to Twitter via the written qualifying exam towards my Ph.D.. At first, I did not know what to do with it. After a good year or so (maybe even sooner) passed, I began to follow some very interesting people that share the same interests as me. It has transformed my academic experience. It is...
User Group news: DC and Philly
There's a new local R User Group starting up in Philadelphia. Alex McClung and Jeremy Leipzig have set up a website for the Philly UseR Group to get things started, so if you're in the area join up and tell them what you'd like from the group. Also, the DC UseR Group is seeing renewed activity after a hiatus...
Web Development with R (video)
Jeroen Ooms' BARUG talk on Web Development with R is now available (with thanks again to Drew Conway): If you want to try the web based apps Jeroen demos in the video yourself, you can find links at Jeroen's homepage (along with the slides for his talk). Click on the links for stockplot, lme4, and gpplot2. vcasmo: Web Development...
Because it’s Friday: The Internet is Made of Cats
Here's a fascinating video that looks at the exponential growth of broadband technology and network-based models ... uh ... who am I kidding? This video has nothing to do with R, statistics, or open-source. It's about cats. But it's funny. And it's Friday. (Some slightly NSFW language, but it's in a strong British accent so you might not even...
Haplotype names in R
Emmanuel Paradis, the mastermind behind 'ape' has struck again. This time he brings us the 'pegas' package, the Population and Evolutionary Genetic Analysis system. This package has a function that collapses the haplotypes (unique DNA sequences) in a DNA alignment, something which is extremely useful in various analyses and in the calculation of genetic diversity.
library(ape)
library(pegas)
data(woodmouse)
x
h
h...
Haplotype names in R
Emmanuel Paradis, the mastermind behind 'ape' has struck again. This time he brings us the 'pegas' package, the Population and Evolutionary Genetic Analysis system. This package has a function that collapses the haplotypes (unique DNA sequences) in a DNA alignment, something which is extremely useful in various analyses and in the calculation of genetic diversity.
library(ape)
library(pegas)
data(woodmouse)
x
h
h...
Rcpp 0.7.3
A quick nine days after release 0.7.2 of Rcpp, our R / C++ interface classes, Romain and I are happy to roll out a new version 0.7.3. It has been uploaded to CRAN and Debian, and mirrors should have the new versions shortly. As before, my local page...
Rcpp 0.7.3
A quick nine days after release 0.7.2 of Rcpp, our R / C++ interface classes, Romain and I are happy to roll out a new version 0.7.3. It has been uploaded to CRAN and Debian, and mirrors should have the new versions shortly. As before, my local page is...
Rcpp 0.7.3
A quick nine days after release 0.7.2 of Rcpp, our R / C++ interface classes, Romain and I are happy to roll out a new version 0.7.3. It has been uploaded to CRAN and Debian, and mirrors should have the new versions shortly. As before, my local page...
M. Edward (Ed) Borasky
Download "Getting Started with the Social Media Analytics Research Toolkit" (pdf, 1.25 megabytes) Download the Social Media Analytics Research Toolkit Media Inactivist, Thought Follower, Sit-Down Comic, Social Media Analytics Researcher, Former Boy Gen...
Short Monte Carlo course in San Antonio
Just a reminder that I will teach a very short course on March 17 in San Antonio, Texas, based on our “Introducing Monte Carlo Methods with R” book, in the first day of the meeting Frontiers of Statistical Decision Making and Bayesian Analysis, in honour of Jim Berger, There still are a 
How to make a heat map in R
FlowingData has just posted a nice step-by-step tutorial on how to make a heat-map in R, like this one on attributes of NBA scorers: If you want to take the concept a step further with time-series data, you can also create calendar heat-maps in R. For example, you can track the level of activity in a forum, or the...
Web Development with R
Presentations given at the Bay Area useR Group on January 10, 2010 by Jeroen Ooms, on how to create web applications use R.
UPDATE: To view an alternative HD quality click here
RCimate Script: Recent Total Solar Irradiance (TSI) Trends
This RClimate Script lets users retrieve and plot the latest data file on daily total solar irradiance (TSI) data from NASA’s Solar Radiation and Climate Experiment (SORCE) Mission. The trend trend chart shows daily values from 2/25/03 to about one week before when the R script is run.
Recent TSI Trends
Here’s the 1/21/10 plot of 
R AnalyticFlow
R AnalyticFlow seems to be a nice tool to have a good overview over the analysis. The same kind of mode is available in Orange and SAS Enterprise Guide. I have not tried it yet, though. Does anyone have any experiences with it?Update on 2010-07-31: the...
R AnalyticFlow
R AnalyticFlow seems to be a nice tool to have a good overview over the analysis. The same kind of mode is available in Orange and SAS Enterprise Guide. I have not tried it yet, though. Does anyone have any experiences with it?Update on 2010-07-31: the...
writeNIfTI() is fully compatible with FSLView
With the NIfTI-1 header extensions the world is your oyster. We decided that one use for such a capability is to keep an audit trail of all operations performed on the image data volume. This is a key feature in the dcemriS4 package. ...
writeNIfTI() is fully compatible with FSLView
With the NIfTI-1 header extensions the world is your oyster. We decided that one use for such a capability is to keep an audit trail of all operations performed on the image data volume. This is a key feature in the dcemriS4 package. ...
UseR 2010 and commercial applications of R
Preparations are well underway for the annual R user conference useR! 2010, to be held at NIST (about 25 miles outside of Washington, DC) July 20-23. This meeting is a true user conference: almost all of the presentations at the conference are contributed by ordinary R users. So, to continue the success of previous years the conference committee needs...
ggplot2: Crayola Crayon Colours
Statistical Algorithms blog attempted to recreate a graph depicting the growing colour selection of Crayola crayons in ggplot2 (original graph below via FlowingData). He also asked the following questions: Is there an easier way to do this? How can I make the axes more like the original? What about the white lines between boxes and 
Scheduled Parallel Computing with R: R + Rmpi + OpenMPI + Sun Grid Engine (SGE)
Recently I’ve learned how to do parallel computing in R on a cluster of machines thanks to the R packages snowfall, snow, and Rmpi. I’ve been using the SOCKET method with snowfall since together they make things simple. With these tools, I can reduce day/week long jobs to hours or a day across many (100)
Remote download and viewing of brain atlas
The dcemriS4 package allows one to easily import and display NIfTI-1 class data sets. The following code takes the MNI152 brain atlas from the WWW and produces an orthographic display using the mid-axial, mid-sagittal and mid-coronal planes.
Remote download and viewing of brain atlas
The dcemriS4 package allows one to easily import and display NIfTI-1 class data sets. The following code takes the MNI152 brain atlas from the WWW and produces an orthographic display using the mid-axial, mid-sagittal and mid-coronal planes.
How to integrate R into web-based applications (video)
The slides and videos from Jeff Horner's talk at last week's Bay Area User Group session on R-Powered Web Apps are now available. I've embedded it here below, but you might want to click through to larger size for better readability on the slides. Jeff's talk (titled "Use Rapache! It works") gives an overview of how to integrate R...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
