Merry Christmas is.R() readers! Thanks for accompanying us through an excellent first semester of R blogging, and for your feedback and enthusiasm. To celebrate, we’ve built an image mosaic from the shiny, happy avatars of our over 600 (!) Twitter followers.
We’ll be back in 2013 with...
Here at is.R(), we have produced countless posts that feature plots with confidence intervals, but apparently none of those are easy to find with Google. So, today, for the purposes of SEO, we’ve put “plotting confidence intervals” in the title of our post.
We also cannot resist an earnest plea from our...
Few of us can resist chocolate, but the real question is: should we even try to resist it? The image is CC by Tasumi1968.
Coursera is offering free courses about R among other interesting subjects. The first one on the application of R in financial econometrics is happening this week (but you can still enroll). There are two more courses starting in January 2013 are more about using R to analyse the data. The differences between the two are 
I'm grateful to Rook for helping me, a simple statistician, learn a few fundamentals of web technology. For R web application development, there are increasingly polished methods available (most notably Shiny ), but you can build one...
The latest issue of the bi-annual, peer-reviewed journal about R, the R Journal, is now available for download. This issue includes three articles on graphics from R-core member and R Graphics author Paul Murrell. He writes about accessing individual elements of an R chart by the component names, drawing complex symbols with the polypath function (useful for map icons,...
The R language provides many features in the language for selecting data from data frames: the "[" operator, logical functions, and utility functions like "subset". But if you know SQL (the query language ubiquitous in database systems), none of this is necessary. With the sqldf package, you can just pretend that your data frame is a database, and use...
This video covers how to run SQL queries using the ‘sqldf’ package within R. This sqldf tutorial was part of a Keystone Solutions podcast discussion about data science and what skills beginning analysts should be learning to improve their skill set. The example files from this tutorial can be downloaded from this link: Example Data
experimental. the behavioral risk factor surveillance system (brfss) aggregates behavioral health data from 400,000 adults via telephone every year. it's um *clears throat* the largest telephone survey in the world and it's gotta lotta uses...
Twitter has become a powerful medium for organizing and communicating with factions during popular uprisings: the crisis in Egypt, the uprising in Syria, the revolution in Iran, and other conflicts all around the world. Twitter's effectiveness relies on its ability for the various factions to self-organize and to fight the information battle in social media. Esteban Moro Egido, a...
Zero Inflated Models and Generalized Linear Mixed Models with R.
Zuur, Saveliev, Ieno (2012).
