Efficient Accumulation in R

July 28, 2015
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Efficient Accumulation in R

by John MountData Scientist, Win-Vector LLC R has a number of very good packages for manipulating and aggregating data (plyr, sqldf, RevoScaleR, data.table, and more), but when it comes to accumulating results the beginning R user is often at sea. The...

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Notes from the 3rd R in Insurance Conference

July 28, 2015
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Notes from the 3rd R in Insurance Conference

Photo: Arthur CharpentierThe R in Insurance conference in Amsterdam was a sold out success! Congratulations to the organising committee at the University of Amsterdam, and many thanks to our...

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upsetplot in ChIPseeker

July 28, 2015
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upsetplot in ChIPseeker

ChIPseeker is an R package for ChIP peak annotation, comparison and visualization. We have implemented several visualization methods, including vennpie that was designed for viewing annotation overlap as shown below:

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Catalan numbers for triangulations gambler’s ruin binary…

July 27, 2015
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Catalan numbers for
triangulations
gambler’s ruin
binary…

Catalan numbers for triangulations gambler’s ruin binary trees trees …from the Flajolet/Sedgewick coursera analysis of...

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Graph-based circle packing

July 27, 2015
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Graph-based circle packing

The previous two posts showed examples of a simple circle packing algorithm using the packcircles package (available from CRAN and GitHub). The algorithm involved iterative pair-repulsion to...

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Statistical Models of Judgment and Choice: Deciding What Matters Guided by Attention and Intention

July 27, 2015
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Statistical Models of Judgment and Choice: Deciding What Matters Guided by Attention and Intention

Preference begins with attention, a form of intention-guided perception. You enter the store thirsty on a hot summer day, and all you can see is the beverage cooler at...

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Egyptian fractions [Le Monde puzzle #922]

July 27, 2015
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Egyptian fractions [Le Monde puzzle #922]

For its summer edition, Le Monde mathematical puzzle switched to a lighter version with immediate solution. This #922 considers Egyptian fractions which only have distinct denominators (meaning the numerator...

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Hadley Wickham on why he created all those R packages

July 27, 2015
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Hadley Wickham on why he created all those R packages

Priceonomics published on Friday an in-depth profile of Hadley Wickham, author of many of the most popular R packages including ggplot2, dplyr and devtools. In the article, he reveals...

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Announcing: Mastering RStudio

July 27, 2015
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Learn the holistic use of RStudio to communicate your R code effectively and persuasively. Max (@nierhoff) and I are both absolute R enthusiasts. We both strongly believe in the power...

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Efficient accumulation in R

July 27, 2015
By
Efficient accumulation in R

R has a number of very good packages for manipulating and aggregating data (plyr, sqldf, ScaleR, data.table, and more), but when it comes to accumulating results the beginning R...

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RBerkeley Was Just Pining For The Fjords

July 27, 2015
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If you made it to Chapter 8 of Data-Driven Security after ~October 2014 and tried to run the BerkeleyDB R example, you were greeted with: Warning in install.packages : ...

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Evading the “Hadley tax”: Faster Travis tests for R

July 26, 2015
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Evading the “Hadley tax”: Faster Travis tests for R

Hadley is a popular figure, and rightly so as he successfully introduced many newcomers to the wonders offered by R. His approach strikes some of us...

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Tiny Data, Approximate Bayesian Computation and the Socks of Karl Broman: The Movie

July 26, 2015
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This is a screencast of my UseR! 2015 presentation: Tiny Data, Approximate Bayesian Computation and the Socks of Karl Broman. Based on the original blog post it...

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Making Static/Interactive Voronoi Map Layers In ggplot/leaflet

July 26, 2015
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Making Static/Interactive Voronoi Map Layers In ggplot/leaflet

Despite having shown various ways to overcome D3 cartographic envy, there are always more examples that can cause the green monster to rear it’s ugly head. Take the Voronoi...

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RcppZiggurat 0.1.3: Faster Random Normal Draws

July 26, 2015
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RcppZiggurat 0.1.3: Faster Random Normal Draws

After a slight hiatus since the last release in early 2014, we are delighted to announce a new release of RcppZiggurat which is now on the CRAN network...

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Installing and Starting SparkR Locally on Windows OS and RStudio

July 26, 2015
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Installing and Starting SparkR Locally on Windows OS and RStudio

Introduction With the recent release of Apache Spark 1.4.1 on July 15th, 2015, I wanted to write a step-by-step guide to help new users get up and running with...

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Where do letters occur in words

July 26, 2015
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Where do letters occur in words

A while back I encountered an interesting graphic showing where letters were located in english words (http://www.prooffreader.com/2014/05/graphing-distribution-of-english.html). The other day I decided to do a similar one for letters...

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Predicting Titanic deaths on Kaggle II: gbm

July 26, 2015
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Predicting Titanic deaths on Kaggle II: gbm

Following my previous post I have decided to try and use a different method: generalized boosted regression models (gbm). I have read the background in Elements of Statistical Learning and arthur...

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Rcpp 0.12.0: Now with more Big Data!

July 25, 2015
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Rcpp 0.12.0: Now with more Big Data!

A new release 0.12.0 of Rcpp arrived on the CRAN network for GNU R this morning, and I also pushed a

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Roll Your Own Gist Comments Notifier in R

July 25, 2015
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As I was putting together the coord_proj ggplot2 extension I had posted a (https://gist.github.com/hrbrmstr/363e33f74e2972c93ca7) that I shared on Twitter. Said gist received a comment (several, in fact) and a...

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IEEE Spectrum Puts R in 6th Place

July 25, 2015
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IEEE Spectrum Puts R in 6th Place

R has moved up three positions to 6th place on IEEE Spectrum ranking. How long will it be before Julia is on the list? The post IEEE Spectrum Puts R...

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Logistic Growth, S Curves, Bifurcations, and Lyapunov Exponents in R

July 24, 2015
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Logistic Growth, S Curves, Bifurcations, and Lyapunov Exponents in R

If you’ve ever wondered how logistic population growth (the Verhulst model), S curves, the logistic map, bifurcation diagrams, sensitive dependence on initial conditions, “orbits”, deterministic chaos, and Lyapunov exponents...

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New quantmod and TTR on CRAN

July 24, 2015
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I just sent quantmod_0.4-5 to CRAN, and TTR_0.23-0 has been there for a couple weeks. I'd like to thank Ivan Popivanov for many useful reports and patches to TTR....

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A Path Towards Easier Map Projection Machinations with ggplot2

July 24, 2015
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A Path Towards Easier Map Projection Machinations with ggplot2

The $DAYJOB doesn’t afford much opportunity to work with cartographic datasets, but I really like maps and tinker with shapefiles and geo-data when I can, plus answer a ton...

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{Long Vs. Wide} Data Frames

July 24, 2015
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{Long Vs. Wide} Data Frames

Introduction This is an excellent resource to understand 2 types of data frame format: Long and Wide. Just take a look at figure 1 inside the article 1) Long format: ggplot2 needs...

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R #6 in IEEE 2015 Top Programming Languages, Rising 3 Places

July 24, 2015
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R #6 in IEEE 2015 Top Programming Languages, Rising 3 Places

IEEE Spectrum has published its 2015 list of Top Programming Languages, and R ranks in 6th place, jumping 3 places from its 2014 ranking. Here's what the IEEE has...

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Why I use Panel/Multilevel Methods

July 24, 2015
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Why I use Panel/Multilevel Methods

I don’t understand why any researcher would choose not to use panel/multilevel methods on panel/hierarchical data. Let’s take the following linear regression as an example: , where is a...

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mapView: basic interactive viewing of spatial data in R

July 24, 2015
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mapView: basic interactive viewing of spatial data in R

Working with spatial data in R I find myself quite often in the need to quickly visually check whether a certain analysis has produced reasonable results. There are two...

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CACM Highlights R

July 23, 2015
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CACM Highlights R

The Association for Computing Machinery is the main professional organization for computer science, largely for academia but still with a broad membership. ACM publishes a number of journals, most...

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