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Winners of 2010 ggplot2 case study competition
The winners of this year's ggplot2 case study competition have been announced. I was honoured to be asked to be a judge of the competition this year, but it was a difficult job with so many excellent entries. In the end, the judging panel (which included Heike Hoffman and Hadley Wickham and me) selected three entries which each demonstrated...
2010 ggplot2 Case Study Competition Winners
The 2010 ggplot2 Case Study Competition Winners have been announced! Congratulations to the winners!Grand Prize: David Kahle, Rice UniversityFinalist: Michael Lavine, UMass Amherst Finalist: Claudia Beleites, TU Dresden & Uni....
2010 ggplot2 Case Study Competition Winners
The 2010 ggplot2 Case Study Competition Winners have been announced! Congratulations to the winners!Grand Prize: David Kahle, Rice UniversityFinalist: Michael Lavine, UMass Amherst Finalist: Claudia Beleites, TU Dresden & Uni....
The S3 OOP system
R currently supports two internal OOP systems (S3 and S4), and several others as add-on packages, such as R.oo, and OOP.
S3 is easy to use but not reliable enough for large software projects. The emphasis of the S3 system was on generic functions and polymorphism. It’s a function centric system which is different to class centric system like JAVA.
Nightlights: cool data, bad geocoding
A global source of population density has been on my low-priority wish list for some time, so I was very excited when I found Steve Mosher’s work with the Nighlights data set. “Nightlights” refers to the artificial lights seen from space at night. Astronomers call it “light pollution” which is pretty accurate since it’s decidedly 
Which parents are satisfied with their child’s education? Those who know their class representative well. Especially in poor schools.
Another result from our OSI / ESP survey of nearly 11000 parents in ten countries. Dots are individual parents.The y-axis is individual parents' overall satisfaction with their children's education. Red dots are parents who know the...
Boxplots or raw data graphs?
We recently had a dilemma for an OSI publication about the design for the graphs. There will be dozens of these graphs showing the mean score on a given variable for nearly 11000 parents from 10 countries. This example is for household wealt...
In case you missed it: September Roundup
In case you missed them, here are some articles from August of particular interest to R users. We presented a profile of Hadley Wickham, author of many popular R packages including ggplot2 and reshape. We riffed the design of the new Twitter website into a discussion on calculating the Golden Mean with R. Several readers contributed 1-liners based on...
ClusterProfiles
It is very common to cluster genes based on their expression profiles, and also very common to integrate Gene Ontology to observe the distribution of biological processes, molecular functions and cellular components for a given gene list. But, what if the two in combination? The Gene Ontology distributions across a variety of gene clusters may give us a new...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
