June 2015

R 3.2.1 is released

June 19, 2015 | Tal Galili

R 3.2.1 (codename “World-Famous Astronaut”) was released yesterday. You can get the latest binaries version from here. (or the .tar.gz source code from here). The full list of new features and bug fixes is provided below. Upgrading to R 3.2.1 on Windows If you are using Windows you can easily upgrade ...
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Using Hadoop with R: It Depends.

June 19, 2015 | Bill Jacobs

by Bill Jacobs, Director Technical Sales, Microsoft Advanced Analytics In the course of working with our Hadoop users, we are often asked, what's the best way to integrate R with Hadoop? The answer, in nearly all cases is, It depends. Alternatives ranging from open source R on workstations, to parallelized ... [Read more...]

Amazon EC2: Upgrading R

June 19, 2015 | Andrew Collier

After installing R and Shiny on my EC2 instance I discovered that the default version of R was a little dated and I wanted to update to R 3.2.0. It's not terribly complicated, but here are the steps I took. First, become root. Remove the old version of R. Edit /etc/... [Read more...]

Connecting R to Everything with IFTTT

June 18, 2015 | Brian Connelly

IFTTT ("if this then that") is one of my favorite tools. I use it to keep and share articles, turn on my home's lights at sundown, alert me when certain keywords are mentioned on Twitter/Reddit/etc., and many other things. Recently, the great people at IFTTT announced the Maker ... [Read more...]

Secure password hashing in R with bcrypt

June 18, 2015 | Jeroen Ooms

The new package bcrypt provides an R interface to the OpenBSD ‘blowfish’ password hashing algorithm described in A Future-Adaptable Password Scheme by Niels Provos. The implementation is derived from the py-bcrypt module for Python which is a wrapper for the OpenBSD implementation. Bcrypt is used for secure password hashing. The ... [Read more...]

Kneat tricks

June 18, 2015 | January

So I have finally switched to knitr for doing my vignettes. The result is satisfactory, but the process was not entirely painless. The command to run instead of “R CMD Sweave foo.Rnw” is Rscript -e 'rmarkdown::render("foo.rmd")' I think that the concept of writing a package ... [Read more...]

Installing rJava R package in Oracle Linux

June 18, 2015 | Christos - Iraklis Tsatsoulis

The Oracle Big Data Lite (BDLite) VM is a handy and convenient platform for testing, development, and training on the related tools and technologies, such as Cloudera Hadoop, Oracle NoSQL database, Oracle SQL Developer & Data Modeler etc. Among other things, it includes a full distribution of the Oracle R Enterprise (... [Read more...]

Fishing for packages in CRAN

June 18, 2015 | Joseph Rickert

by Joseph Rickert It is incredibly challenging to keep up to date with R packages. As of today (6/16/15), there are 6,789 listed on CRAN. Of course, the CRAN Task Views are probably the best resource for finding what's out there. A tremendous amount of work goes into maintaining and curating these ... [Read more...]

Free Webinar: Intro to SparkR

June 18, 2015 | Bob Muenchen

Are you interested in combining the power of R and Spark?  An “Intro to SparkR” webinar will take place on July 15, 2015 at 10 am California time. Everyone is welcome to attend. Agenda: – What is SparkR? – Recent … Continue reading → [Read more...]

dynamic mixtures [at NBBC15]

June 17, 2015 | xi'an

A funny coincidence: as I was sitting next to Arnoldo Frigessi at the NBBC15 conference, I came upon a new question on Cross Validated about a dynamic mixture model he had developed in 2002 with Olga Haug and Håvård Rue [whom I also saw last week in Valencià]. The ...
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‘Variable Importance Plot’ and Variable Selection

June 17, 2015 | arthur charpentier

Classification trees are nice. They provide an interesting alternative to a logistic regression.  I started to include them in my courses maybe 7 or 8 years ago. The question is nice (how to get an optimal partition), the algorithmic procedure is nice (the trick of splitting according to one variable, and only ...
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Summarizing Development Funds Data

June 17, 2015 | screenshotguy

Still going through the Getting and Cleaning Data course on Coursera while also enrolling in the Data Manipulation using dplyr course on DataCamp. That said, i guess working on a teeny data exploration task on actual raw data would help in remembering all these new … Continue reading →
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Confidence Intervals for prediction in GLMMs

June 17, 2015 | grumble10

With LM and GLM the predict function can return the standard error for the predicted values on either the observed data or on new data. This is then used to draw confidence or prediction intervals around the fitted regression lines. The confidence intervals (CI) focus on the regression lines and ...
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Sharing environments using Vagrant

June 17, 2015 | Brian Mitchell

Ever thought about what is required to create validated software? At Mango we have as it is fundamental to many of our projects. Software validation is a big topic so I’m going to focus on one aspect: How do we … Continue reading → [Read more...]

Language Difficulty and Diversity

June 17, 2015 | jlebeau

*For R users not interested in the post but the code, a markdown file is available on github.  Thanks to Zuguang Gu and Bob Rudis for the 'circlize' and 'waffle' packages respectively.I've been studying Arabic for about 10 months no... [Read more...]

licorice: plot Likert-like data

June 16, 2015 | FishyOperations

I wanted to create a nice visualization from a survey data set. I quickly stumbled upon the likert package (go check it out). I did however have some trouble getting it to work the way I wanted. Therefore I made a quick implementation of my own that y... [Read more...]
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