March 2012

When Big Data matters

March 21, 2012 | Allan Engelhardt

Big can be a qualitative as well as a quantitative difference. The gas in the ill-fated Hindenburg airship, the gas that formed our Sun, and the gas that formed the Milky Way galaxy were just lumps of hydrogen atoms (with varying impurities). The difference was in the number of atoms. ... [Read more...]

Simple ROC plots with ggplot2 – Part 2

March 21, 2012 | Kate Nambiar

In the first part of this article we built a function (rocdata) to calculate the co-ordinates for the ROC plot and its summary statistics. Now we need to actually produce the plot. I make most of my plots in ggplot2 because of it’s versatility. However there’s no reason ... [Read more...]

Simple ROC plots with ggplot2 – Part 1

March 21, 2012 | Kate Nambiar

I was recently asked to summarise an analysis using a ROC (Receiver-operator characteristics) plot. R has a number of particularly good tools to produce ROC plots – ROCR, pROC and the Bioconductor package ROC to name a few. However I thought it would be a useful exercise [...] [Read more...]

Copy and paste small data sets into R

March 21, 2012 | Markus Gesmann

How can I embed a small data set into my R code? That was the question I came across today, when I prepared my talk about Dynamical Systems in R with simecol for the forthcoming Cologne R user group meeting. I wanted to add all the R code of the ...
[Read more...]

Data Analysis Training

March 20, 2012 | prasoonsharma

I'm training some of my colleagues on Big'ish data analysis this week. Here's how I'm running the class. Would love your ideas to make it better. CLASS OBJECTIVES (LEARNING OUTCOMES)After completion of the course, you will be able to:Understand concept... [Read more...]

New R User Group in Montréal

March 20, 2012 | David Smith

The Biology Department at McGill University in Québec, Canada has been running a series of R workshops since 2010. Past topics have included Generalized Additive Models, Linear Mixed-effects Models and a four-part Intro to R series -- follow the links and look at the bottom of each page for some ... [Read more...]

Running OpenBUGS on a Mac Running OSX

March 20, 2012 | jebyrnes

After writing up my tutorial regarding getting WinBUGS running on a Mac in R, a friend sent me this fantastic simple tutorial on the same thing for OpenBUGS on a mac in R. So, for those that want it, install away! Looks a good bit simpler, actually! Tweet [Read more...]

Citing R packages

March 20, 2012 | Carl

I’m not always careful in citing all the R packages I use. R actually has some rather nice built-in mechanisms to support this, so I really have no excuse. Here’s some quick examples: To cite the ouch package in publications use: Aaron A. King and Marguerite A. Butler (2009), ... [Read more...]

R/Finance 2012 Registration Open

March 20, 2012 | Joshua Ulrich

You can find more information on the R/Finance conference website.  Hope to see you in Chicago in May!The registration for R/Finance 2012 -- which will take place May 11 and 12 in Chicago -- is NOW OPEN!Building on the success of the three previou... [Read more...]

Revolution Newsletter: March 2012

March 19, 2012 | David Smith

The most recent edition of the Revolution Newsletter is out. The news section is below, and you can read the full March edition (with highlights from this blog and community events) online. You can subscribe to the Revolution Newsletter to get it monthly via email. Download Revolution R Enterprise, free ... [Read more...]
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