I write about R every weekday at the Revolutions blog: http://blog.revolutionanalytics.com and every month I post a summary of articles from the previous month of particular interest to readers of r-help. In case you missed them, here are some articles related to R from the month of December: January 24: the webinar "Using R with Hadoop" will be presented by Jeffrey Breen: http://bit.ly/W0AqqZ The blog is.R ran an excellent series of R tips and application in 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: http://bit.ly/W0Aszi Videos from Coursera's introductory course on R are available on YouTube: http://bit.ly/W0Aszj The Revolutions blog celebrates its 4th anniversary with the top 10 posts of 2012: http://bit.ly/W0Aqr0 An analysis using R suggests the UK's NHS could save hundreds of millions on prescription drug costs: http://bit.ly/W0Aqr1 "Try R" is a new on-line interactive tutorial for R: http://bit.ly/W0Aqr2 RStudio's "shiny" package for interactive web-based R applications is now available on CRAN: http://bit.ly/W0Aqr3 Revolution R Enterprise 6.1 adds the capability for fitting rpart-style tree models to data in Hadoop HDFS: http://bit.ly/W0Aqr4 A New York Times graphic editor shares how he uses R base graphics to create bar charts in the newspaper: http://bit.ly/W0Aszk Some non-R stories in the past month included: how to make a 360-degree photo of a landmark (http://bit.ly/W0Aszl), influential data scientists on Twitter (http://bit.ly/W0AsPy), fire and magnetism (http://bit.ly/W0Aqr6), and a card trick using base 3 arithmetic (http://bit.ly/W0Aqr5). Meeting times for local R user groups (http://blog.revolutionanalytics.com/local-r-groups.html) can be found on the updated R Community Calendar at: http://blog.revolutionanalytics.com/calendar.html If you're looking for more articles about R, you can find summaries from previous months at http://blog.revolutionanalytics.com/roundups/. Join the Revolution mailing list at http://revolutionanalytics.com/newsletter to be alerted to new articles on a monthly basis. As always, thanks for the comments and please keep sending suggestions to me at david at revolutionanalytics.com . Don't forget you can also follow the blog using an RSS reader like Google Reader, or by following me on Twitter (I'm @revodavid). Cheers, # David -- David M Smith <david at revolutionanalytics.com> VP of Marketing, Revolution Analytics http://blog.revolutionanalytics.com Tel: +1 (650) 646-9523 (Palo Alto, CA, USA) Twitter: @revodavid