**Revolutions**, and kindly contributed to R-bloggers)

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

The deadline for our contest to visualize the location of R user groups has been extended to August 16.

Previews of R-related sessions at this year's JSM conference in Boston.

Coding errors in R graphics scripts serendipitously create some interesting art.

Another look at the dependency graphs for R packages with the miniCRAN package, following on from this post.

A Reuters journalist used R for a story about the impact of rising sea levels.

The DSC 2014 conference featured an interesting discussion on learnings from alternative R implementations like Renjin and pqR.

An in-depth look at R's capabilities for agent-based modeling and the RNetLogo package.

The magrittr package introduces the %>% pipe operator, an elegant way of chaining R functions together.

Some considerations for choosing a trainer for R courses.

Cleveland popularized lattice-style graphics by revealing an error in the "barley" data set, but there may not have been any error after all.

A review of R packages for meta-analysis.

Preparing big data for analysis in R with Xplenty.

A free e-book on Machine Learning with R from InsideBigData.

Recent research by the IEEE ranks R the 9th most popular of all programming languages.

A brief summary of the changes in R 3.1.1.

Joe Rickert recaps John Chambers' keynote address on the history of R at useR! 2014.

I recount some personal highlights from the useR! 2014 conference in Los Angeles.

Reviews and links to materials from some of the R tutorials presented at useR! 2014.

A 5-minute history of Revolution Analytics, in slides.

Part 2 in a series on constructing a term structure of interest rates with R.

General interest stories (not related to R) in the past month included: misheard Pearl Jam lyrics, a pop song about grammar, a book review of "The Martian", and some of the fuzzy details behind the definition of "USA".

As always, thanks for the comments and please send any suggestions to me at [email protected]. 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.

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