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...n December, with posts including working with Stata files, working with graphs and networks, and text analysis: http://bit.ly/W0Asze Kohske Takahashi provides R scripts to create a collection of optical illusions: http://bit.ly/W0AqqY Highlights of the latest issue of the R Journal: http://bit.ly/W0Aszh Coursera has a new free online course on data analysis with R starting on January 22: http://bit.ly/W0Aszf A video tutorial on using the sqldf package to manipulate data frames using SQL: http://bit.ly/W0Aszg Esteban Moro Egido visualizes the growth of political revolutions using Twitter and R:...