R data.tree 0.3 “Apple Tree” on CRAN: Now with tree plot!

February 13, 2016
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R data.tree 0.3 “Apple Tree” on CRAN: Now with tree plot!

Read about the exciting new features of the latest data.tree release. generate tree plots! The post R data.tree 0.3 “Apple Tree” on CRAN: Now with tree plot! appeared first on ipub.

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Unit Testing in R – slides

February 13, 2016
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Guest post by Stefan Feuerriegel – originally published here. Software testing describes several means to investigate program code regarding its quality. The underlying approaches provides means to handle errors once...

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The Simple Reason Sanders Is Winning

February 13, 2016
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The Simple Reason Sanders Is Winning

Sanders has way more backers across the United States (with the possible exception of the South). Hillary Clinton might be doing well at the polls. However, the shocking fact...

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Gravitational Network

February 12, 2016
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person-bp-edit

The Gravitational Waves paper that was in the news yesterday has almost a thousand authors. (Actually there’s more than one paper—there’s the “discovery” paper and the “implications” paper.) Out...

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New R logo

February 12, 2016
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New R logo

The R logo has been revised in to be more compatible with the principles of flat design followed by some recent user interfaces such as Microsoft Windows >= 8...

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Why I use ggplot2

February 12, 2016
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Why I use ggplot2

If you’ve read my blog, taken one of my classes, or sat next to me on an airplane, you probably know I’m a big fan of Hadley Wickham’s...

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You can now extend RStudio with add-ins

February 12, 2016
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You can now extend RStudio with add-ins

The latest update to RStudio, the cross-platform open-source integrated development environment for the R language from the team at RStudio, adds many new features for R developers. But perhaps...

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Workshop on survival and time series analysis in empirical SE

February 12, 2016
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In January the material in my book on Empirical software engineering using R had its first exposure to professional software developers at a one day workshop (there was a...

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new version of abcrf

February 12, 2016
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new version of abcrf

Version 1.1 of our R library abcrf version 1.1  is now available on CRAN.  Improvements against the earlier version are numerous and substantial. In particular,  calculations of the random...

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An R Package for the “controversial” counts of registered voters in Uganda

February 12, 2016
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An R Package for the “controversial” counts of registered voters in Uganda

Some members of the Ugandan media have claimed that counts of registered voters for the 2016 General Election, contain almost 20,000 “ghost voters”.  This is according to their analyses...

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KPI dashboard in R with animated icons

February 12, 2016
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KPI dashboard in R with animated icons

So Key Performance Indicators (KPIs) are all the rage in the dashboarding community… well everywhere really. The premise is simple… check a list of measurements against targets and show how...

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The answer is e, what was the question?!

February 11, 2016
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The answer is e, what was the question?!

A rather exotic question on X validated: since π can be approximated by random sampling over a unit square, is there an equivalent for approximating e? This is an...

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Getting Started with Microsoft SQL Server on Azure

February 11, 2016
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Getting Started with Microsoft SQL Server on Azure

by Joseph Rickert If you are an R user and work for an enterprise where Microsoft SQL server is important, it is extremely helpful to have easy access to...

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Reverse Engineering with Correlated Features

February 11, 2016
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Reverse Engineering with Correlated Features

In econometric modeling, I usually have a problem with correlated features. A few weeks ago, I was discussing feature selection when features are correlated. This week, I was wondering about...

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Clustering French Cities (based on Temperatures)

February 11, 2016
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Clustering French Cities (based on Temperatures)

In order to illustrate hierarchical clustering techniques and k-means, I did borrow François Husson‘s dataset, with monthly average temperature in several French cities. > temp=read.table( + "http://freakonometrics.free.fr/FR_temp.txt", + header=TRUE,dec=",") We...

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Plot the new SVG R logo with ggplot2

February 11, 2016
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Plot the new SVG R logo with ggplot2

High resolution and SVG versions of the new R logo are finally available. I converted the SVG to WKT (file here) which means we can use it like we...

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A Tall Drink of Water

February 10, 2016
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A Tall Drink of Water

In a previous post, I used water consumption data from Utah’s Open Data Catalog to explore what kind of users consume the...

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The Unbereable Insolence of Prime Numbers or (Playing to be Ulam)

February 10, 2016
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The Unbereable Insolence of Prime Numbers or (Playing to be Ulam)

So rock me mama like a wagon wheel, rock me mama anyway you feel (Wagon Wheel, Old Crow Medicine Show) This is the third iteration of Hilbert curve. I...

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23 new R jobs from around the world (2016-02-10)

February 10, 2016
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23 new R jobs from around the world (2016-02-10)

This is the bi-monthly R-bloggers post (for 2016-01-25) for new R Jobs. To post your R job on the next post Just visit this link and post a new R job to the R community...

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Finding the K in K-means by Parametric Bootstrap

February 10, 2016
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Finding the K in K-means by Parametric Bootstrap

One of the trickier tasks in clustering is determining the appropriate number of clusters. Domain-specific knowledge is always best, when you have it, but there are a number of...

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In case you missed it: January 2016 roundup

February 10, 2016
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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...

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Analysis: Clinton backed by Big Money: Sanders by Small

February 10, 2016
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Analysis: Clinton backed by Big Money: Sanders by Small

This article examines FEC data in depth and finds what most people already know. Hillary Clinton's presidential bid is financed largely through a relatively small quantity...

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Craft httr calls cleverly with curlconverter

February 10, 2016
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Craft httr calls cleverly with curlconverter

When you visit a site like the LA Times’ NH Primary Live Results site and wish you had the data that they used to make the tables & visualizations...

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The Easiest Way to Learn ggplot2

February 10, 2016
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Learn how to produce meaningful and beautiful data visualizations with DataCamp’s ggplot2 course series. Be introduced to the principles of good visualizations and the grammar of graphics plotting...

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Data Visualization Course Notes

February 10, 2016
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Data Visualization Course Notes

...

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[R] Kenntnis-Tage 2016: Mastering the Digital Transformation with R and Analytics

February 10, 2016
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“Digital transformation is happening now.” This is not only the message of this year’s CeBIT, but also illustrates the actuality of digital change in the business environment. Data analysis...

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Clusters of Texts

February 10, 2016
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Clusters of Texts

Another popular application of classification techniques is on texmining (see e.g. an old post on French president speaches). Consider the following example,  inspired by Nobert Ryciak’s post, with 12 wikipedia pages,...

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Durban R Users Group Meetup: 24 February 2016 @ The Green Door

February 10, 2016
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We’re kicking off the inaugural meeting of the Durban R Users Group with a live video presentation by Andrie de Vries (Senior Programme Manager, R Community Projects at Microsoft...

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Clusters of (French) Regions

February 9, 2016
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Clusters of (French) Regions

For the data scienec course of tomorrow, I just wanted to post some functions to illustrate cluster analysis. Consider the dataset of the French 2012 elections > elections2012=read.table( "http://freakonometrics.free.fr/elections_2012_T1.csv",sep=";",dec=",",header=TRUE)...

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