A recent Wall Street Journal article ruminated about the degree that language shapes thought (rather than the other way around). This idea has rather profound implications in the more specific domain of programming languages. We initially learn a...
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The Mule goes SURFing
A month ago I posted about “SURF”, the newly-established Sydney R user forum (R being an excellent open-source statistics tool). Shortly after publishing that post, I attended the inaugural forum meeting. While we waited for attendees to arrive, a few people introduced themselves, explaining why they were interested in R and how much experience they
Pie Charts in ggplot2
...and other isomorphic data shape presentations...The Pie Chart has been widely criticized in recent times by statisticians. Edward Tufte goes as far as to call this the "prevailing orthodoxy." The reasons generally cited:The rel...
Hadley Wickham’s ggplot2 / Data Visualization Course Materials
Hadley Wickham, creator of ggplot2, an immensely popular framework for Tufte-friendly data visualization using R, is teaching two short courses at Vanderbilt this week. Once we opened registration to Vanderbilt students and staff we instantly filled al...
Hacker News User Base Changed?
There are lots of references on Hacker news to the fact that the "good old days" are gone and that the character of the site has changed since it started. The visualization above was based on a sample of users that posted on the site in recent ti...
The counterfactual GPS!
WHAT IF YOUR GPS TOLD YOU WHAT WOULD HAVE HAPPENED IF YOU HAD TAKEN THE OTHER ROUTE? Not long ago, your Decision Science News editor was planning a trip to a book group meeting along with another member. The monthly book group takes place in Cove Neck Long Island, about an hour East of Manhattan.
Quick scatterplot with associated histograms
R can produce some beautiful graphics, and there are some excellent packages, such as lattice and ggplot2 to represent data in original ways. But sometimes, all you want to do is explore the realtionship between pairs of variables with the minimum of fuss. In this post we’ll use the data which we imported in the 
BP Oil and Gas Recovery
As mentioned in a previous post, the US Department of Energy has been providing data about the Deepwater Horizon as it becomes available. Recently, the amount of oil and gas recovered was made available. The spreadsheet includes a grap...
Analysing the ISMB 2010 meeting using R
The colossus of bioinformatics meetings, ISMB, convened in Boston this year from July 9 – 13. As in recent years, the meeting was covered online at its website, FriendFeed and Twitter. I thought it would be fun to run a quick analysis of activity at the FriendFeed room using R. 1. Fetch the data We 
Analyze Online R User Conference Data
The R User Conference 2010 will be underway shortly - and what better way to commemorate the event than to blast out some R code related to the conference? HTML tables on websites for the past three years list participants an...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
