One of the best ways to learn how to code in R is to view sample scripts that people share. I recently came across this post where Michael uses R to scrape twitter and collect all sorts of great data … Continue reading → [Read more...]

   I’ve been playing with Twitter data over the last week, archiving Algerian, Egyptian, Iranian, and Chinese tweets.  I thought I’d bring the story a little closer to home this time by archiving tweets from Wisconsin Union protesters on the … Continue reading → [Read more...]

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Following on from Friday's post about the travails of internet security firm HBGary, R user Michael Bommarito has done an analysis of the leaked emails to find the top 20 most contacted email addresses and the top 20 most referenced internet domains. There are some interesting names on those lists, to be ... [Read more...]

Three new local R user groups have just been added to the directory: In Québec, the group Plein-R is affilliated with the department of Forestry, Geography and Geomatics at Laval University. Although the group's website is in French, group organizer Etienne Racine says, "Our group is bilingual. Our meetings ... [Read more...]

Friday in the course of statistics, we started the section on confidence interval, and like always, I got a bit confused with the degrees of freedom of the Student (should it be or ?) and which empirical variance (should we consider the one wher... [Read more...]

Today I played a bit with JRI as part of rJava, a Java-R-interface. Here you can learn how to setup for Debian/Ubuntu/akins. [Read more...]

by Earl F. Glynn, Kansas Watchdog The PowerPoint slides below give an overview of screen scraping and mapping in R. Details with comments about many of the R statements can be found in these articles: Simple R Screen Scraping Example R Screen Scraping:... [Read more...]

I have bad news for those of you trying to produce lucid code! [Read more...]

by Earl F. Glynn, Kansas Watchdog This article describes how the data obtained from scraping 105 pages of county election data were analyzed and mapped using R. Background The Kansas Secretary of State published Nov. 2010 election results online, inclu... [Read more...]

by Earl F. Glynn, Kansas Watchdog The goal of this article is to describe how to “reshape” data from screen scraping to make analysis with existing tools easier. Background The Kansas Secretary of State published Nov. 2010 election results ... [Read more...]

by Earl F. Glynn, Kansas Watchdog The goal of this article is to show how to visit 105 online web pages programmatically and “scrape” data from them to form a statewide summary of election data in Kansas. An earlier article gave details of ... [Read more...]

by Earl F. Glynn, Kansas Watchdog The goal of this exercise is to show how to “screen scrape” data from an online web page using R. Additional articles will extend this example to scrape data from 105 Kansas county pages to form a statewide... [Read more...]

Ok, R is very well-considered in certain respects, but there are also some things annoying me... This time it's scoping... [Read more...]

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After the very exciting and I think quite successful ABC in Paris meeting two years ago, Michael Stumpf from Imperial College London suggested a second edition in London along the same lines. Michael kindly associated me with the planning of this meeting. It is (logically) called ABC in London (or ... [Read more...]

The work of Edward Tufte is worth reading if you are interested in designing meaningful graphs and removing chart junk from your displays. [Read more...]

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A new release 0.9.1 of Rcpp went to CRAN and Debian yesterday. This version contains mostly bug-fixes and rather few enhancements. The changes are mostly 'internal fixes' and not user-facing; they mostly address some issues in memory management w... [Read more...]

The next release of R is scheduled for release February 25, and R 2.12.2 will likely be the final bug-fix release of the 2.12 series before R 2.13 is released in April. According to the NEWS file in the latest daily build, 2.12.2 will improve complex-arithmetic support on some rare platforms that don't support complex ... [Read more...]