Monthly Archives: February 2011

Simulating second difference using Zelig

February 11, 2011
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I am trying to simulate second difference using Zelig, here is my code:--------------------------------------------------------data(turnout)# estimationz.out <- zelig(vote ~ race*age + educate + income,            ...

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Simulating second difference using Zelig

February 11, 2011
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I am trying to simulate second difference using Zelig, here is my code:--------------------------------------------------------data(turnout)# estimationz.out <- zelig(vote ~ race*age + educate + income,            ...

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Where should you publish that next paper?

February 11, 2011
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Where should you publish that next paper?

Like many academics, Arthur Charpentier thinks a lot about publishing papers in journals. Specifically, we wondered if there was a way to figure out which journal was the best place to publish his next paper and have it accepted: I was wondering if there were clusters of journals, i.e. journals that publish almost the same kind of articles (so...

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UseR Meetup at Google San Francisco

February 11, 2011
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UseR Meetup at Google San Francisco

Earlier this week, Google hosted the Bay Area useR Group at our San Francisco office. Over 40 attendees showed up to hear Dylan Beaudette from UC Davis give a presentation about investigating soil genesis and geography with R (PDF). Dylan has been using...

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UseR Meetup at Google San Francisco

February 11, 2011
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UseR Meetup at Google San Francisco

Earlier this week, Google hosted the Bay Area useR Group at our San Francisco office. Over 40 attendees showed up to hear Dylan Beaudette from UC Davis give a presentation about investigating soil genesis and geography with R (PDF). Dylan has been using...

Read more »

Rounded Corners in ggplot2 Graphics

February 11, 2011
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Rounded Corners in ggplot2 Graphics

Last night, while working on something else that I want to finish, I ended up indulging in a bit of "yak shaving". I wondered how easy it would be to generate graphics in ggplot2 with rounded corners. I don't think that there is any nativ...

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Rounded Corners in ggplot2 Graphics

February 11, 2011
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Rounded Corners in ggplot2 Graphics

Last night, while working on something else that I want to finish, I ended up indulging in a bit of "yak shaving". I wondered how easy it would be to generate graphics in ggplot2 with rounded corners. I don't think that there is any nativ...

Read more »

Le Monde puzzle [#5]

February 10, 2011
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Le Monde puzzle [#5]

Another Sudoku-like puzzle from the weekend edition of Le Monde. The object it starts with is a 9×9 table where each entry is an integer and where neighbours take adjacent values. (Neighbours are defined as north, west, south and east of an entry.) The question is about whether or not it is possible to find

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R overtakes SAS and Matlab in programming language popularity

February 10, 2011
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Tiobe Software ranks the popularity of programming languages based on references in search engines. While the methodology might be debated in terms of the absolute rankings it produces, it is quite interesting to see how the rankings fluctuate over time: Tiobe has produced a monthly report of rankings based on this methodology since 2001. In the Tiobe Programming Community...

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Stata or R

February 10, 2011
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Stata or R

Recently I came across a complex model written in Access with complex SQL queries all over the place. The engineer who was maintaining it and I did some analysis and agreed that the model was using SQL in an unnatural way (things SQL isn't good at) - c...

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