In case you missed them, here are some articles from January of particular interest to R users.

Animated visualizations and analysis of data from NYC's municipal bike program, created with R.

Many local R user groups are sharing materials from meetups using Github.

A detailed R tutorial on analyzing your Twitter archive and performing sentiment analysis.

How to combine R and Python in Jupyter notebooks.

Many datasets are available for analysis in R using Kaggle's online platform, including the American Community Survey.

Getting started with Markov Chains in R and even more R packages for Markov

Chain analysis.

Replays are available for recent webinars on Microsoft R Open and Microsoft R Server.

Microsoft R Open 3.2.3 (formerly Revolution R Open), and new CRAN Time Machine now available at MRAN.

Overview of parallel computing in R.

R packages providing sources of data.

Visual Studio will soon support the R language.

Microsoft R Server available free to students and developers.

Revolution R is now Microsoft R.

A new ggplot2 extension avoids overlapping text labels.

R played a big part in a scientific breakthrough regarding reproducibility of results.

An online data science course using Microsoft Azure and R.

A review of the 7th R user conference in Spain.

Using network analysis in R to explore connections in the movie "Love Actually".

The most popular posts on the Revolutions blog in 2015.

General interest stories (not related to R) in the past month included: pinball skills, when walking up the escalator is inefficient, Pokemon or Big Data and mimicking famous guitar styles.

As always, thanks for the comments and please send any suggestions to me at davidsmi@microsoft.com. Don't forget you can follow the blog using an RSS reader, via email using blogtrottr, or by following me on Twitter (I'm @revodavid). You can find roundups of previous months here.