Blog Archives

Journal of Statistical Software. Vol. 40

April 12, 2011
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The latest edition of the Journal of Statistical Software is out, with plenty of interesting articles for R users. A must-read is Hadley Wickham's article on "The Split-Apply-Combine Strategy for Data Analysis", which makes a compelling argument for the use of the plyr package to partition datasets and apply sub-group analyses. Also, anyone who hasn't yet purchased a copy...

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Rstudio updates to beta 2

April 11, 2011
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The folks over at Rstudio have released a new update to their open-source R GUI, currently in beta test. This Beta 2 release adds more customizable layouts, editor improvements and new editing themes. Also of interest is a new feature that allows creation of graphics that update under the control of sliders and checkboxes and such. See the full...

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New R User Group in St Louis, MO

April 8, 2011
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The latest local R user group to join the fold is in St Louis, Missouri. Created by Josh Ulrich, their first meeting is on Monday, April 11. Check the link below for full details and to RSVP. Saint Louis R User Group: Inaugural Meeting

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Revolution R, PMML and ADAPA: Webinar April 13

April 7, 2011
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If you'd like to learn more about using the PMML package in R to export statistical models, or if you'd just like to learn more about building predictive models in Revolution R and creating predictions (scores) from them in other applications or in the cloud, I'll be co-presenter on a webinar next week that might be of interest. On...

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How to search the documentation of all CRAN packages

April 5, 2011
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How to search the documentation of all CRAN packages

Ever tried to find a specific function or algorithm in R that you're sure that someone has implemented in a CRAN package, but you don't know which one? Now you can find it, in the R Packages section of R community site inside-R.org. The R Packages section now includes the ability to browse and search help files from R...

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Program announced for R/Finance 2011

April 1, 2011
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R/Finance, the conference devoted to users of R in the financial sector, takes place every year in Chicago. The program has just been announced for R/Finance 2011 (to be held April 29 and 30), and it's jam-packed with talks from on automated trading, financial risk, hedge ratios, stochastic volatility, and much, much, more. Here's the announcement from the organizers:...

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Revolution’s Chief Scientist: R is the Language of the Future

March 31, 2011
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Revolution Analytics' Chief Scientist Lee Edlefsen was a presenter at the Structure Big Data conference in New York last week. You can download the slides from his talk, The Coming Revolution in Statistics, here (PDF 418k). In his presentation, Lee states that "R is not only the statistical language of the present, in my opinion it is the language...

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New R User Groups in Tallahasse (FL), Hobart (TAS)

March 30, 2011
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Two new R User Groups have just started up. The first us in Tallahassee, Florida, and their first meeting is on April 10. Spinning to the other side of the globe, the other is in Hobart, the capital of the Australian island state, Tasmania (their first meeting is also on April 8). It's great to see R user groups...

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Violins of Volatility

March 29, 2011
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Violins of Volatility

A violin plot is a combination box plot and a kernel density plot: it starts with a box plot, and adds a rotated kernel density plot to each side of the box plot. You can create violin plots with the vioplot function (from the vioplot package) package in R. When looking at the volatility of financial instruments, the financial...

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Reminder: useR! 2011 abstracts, earlybird registration deadline April 1

March 28, 2011
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If you're planning to attend the worldwide R user conference useR! 2011, don't forget that April 1 (this Friday) is the deadline for submitting abstracts for contributed talks and posters. Early-bird discounts for attendee registrations expire on Friday as well. (Revolution Analytics is a proud sponsor of useR! 2011, and chief scientist Lee Edlefsen is one of the keynote...

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