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The is.R blog has been on a roll in December with their Advent CalendaR feature: daily tips about R to unwrap each day leading up to Christmas. If you haven't been following it, start with today's post and scroll down. Sadly there isn't a tag to collect all these great posts together, but here are a few highlights:

• December 4: Reading and writing Stata data files with R
• December 6: Calculating the outline surrounding a collection of points
• December 8: Ranking popularity of terms on Twitter
• December 14: A network of countries, grouped by flag similarity (chart below)
• December 16: Text analysis with random-effects models
• December 21: Beautiful network diagrams (like the one below)

You should check out all of the posts. All include the R code so that you can re-creating the charts, tables and analysis for yourself. What a lovely Christmas gift! The first post in the series is linked below.

is.R: Using XML to grab tables from the web

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