Monthly Archives: August 2012

The Social Dynamics of the R Core Team

August 12, 2012
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The Social Dynamics of the R Core Team

Recently a few members of R Core have indicated that part of what slows down the development of R as a language is that it has become increasingly difficult over the years to achieve consensus among the core developers of the language. Inspired by these claims, I decided to look into this issue quantitatively by

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Zurich, Jul 2012 – Advanced Portfolio eBook

August 12, 2012
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(This article was first published on Rmetrics blogs, and kindly contributed to R-bloggers) To leave a comment for the author, please follow the link and comment on their blog: Rmetrics blogs. R-bloggers.com offers daily e-mail updates about R news and tutorials on topics such as: Data science, Big Data, R jobs, visualization (ggplot2, Boxplots, maps, animation), programming (RStudio, Sweave,...

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Now That We Live in Seattle

August 11, 2012
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It has been just a few weeks since my wife, my son, and I moved to Seattle so that I could begin my postdoc at The Hutch. Now that we have been here a short time and are settled, we intend to start exploring Seattle, doing typical touristy things as we...

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What have I been doing all these years?!

August 11, 2012
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What have I been doing all these years?!

In which Mo Farah et al show James that he's got a nasty heel-strike

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Tcl/Tk GUI Example with Variable Input by User

August 11, 2012
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Tcl/Tk GUI Example with Variable Input by User

I recently used R with GUI-elements for the first time and browsed through the available online resources, but I didn't quite find what I was searching for: The user should be able to put in some variables and call a function with a button. In the end ...

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Universal portfolio, part 10

August 10, 2012
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Universal portfolio, part 10

Part 9 compared the wealth of Universal against other portfolio selection algorithms by using the experimental cumulative distribution function of the relative wealth.  This leads to a very compact representation, but it completely hides the ...

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RcppExamples 0.1.4

August 10, 2012
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An updated version 0.1.4 of the RcppExamples package is now on on CRAN. RcppExamples contains a few illustrations of how to use Rcpp. The NEWS entry is below: a new example was added illustrating use of the (vectorised) random-number generators...

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Animated GIF Annual Correlation of 48 Industries for 50 Years

August 10, 2012
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Animated GIF Annual Correlation of 48 Industries for 50 Years

Inspired by http://blogs.reuters.com/felix-salmon/2012/08/06/chart-of-the-day-hft-edition/, I thought I would build on 48 Industries (Dendrogram Ordered) Over 50 Years, “Trend is Not Your Friend” Applied to 48 Industries, and 48 Industries Since 19...

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In case you missed it: July 2012 Roundup

August 10, 2012
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In case you missed them, here are some articles from June of particular interest to R users. The Environmental Performance Index website uses R to rank countries by measures like environmental health and ecosystem vitality. A log-linear regression in R predicted the gold-winning Olympic 100m sprint time to be 9.68 seconds (it was actually 9.63 seconds). Some R-related talks...

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Trends in run scoring – comparing the leagues

August 10, 2012
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My previous two posts have looked a using R to create trend lines for the run scoring environments in the American and National leagues.  This time around, I'll plot the two against each other to allow for some comparisons. (The code below assumes that you've read the data into your workspace and calculated the LOESS...

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