Yet Another Baseball Defense Statistic

April 22, 2014
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Yet Another Baseball Defense Statistic

Fangraphs recently published an interesting dataset that measures defensive efficiency of fielders. For each player, the Inside Edge dataset breaks their opportunities to make plays into five categories, ranging from almost impossible to routine. It al...

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Simpson’s Paradox in a nutshell

April 22, 2014
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Norm Matloff points us to a pithy example that sums up Simpson's Paradox perfectly, captured in the title of a medical paper: "Good for Women, Good for Men, Bad...

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Announcing RStudio Shiny Server Pro v1.1

April 22, 2014
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Announcing RStudio Shiny Server Pro v1.1

We are happy to announce the availability of v1.1 of RStudio Shiny Server Pro, our commercial server for deploying Shiny applications.  In this release we took your feedback and...

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R jobs (April 22nd 2014)

April 22, 2014
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r_jobs

This is the bimonthly R Jobs post (for 2014-04-22), based on the R-bloggers’ sister website: R-users.com. If you are an employer who is looking to hire people from the R community,...

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sjPlot: New options for creating beautiful tables, documentation on #RPubs #rstats

April 22, 2014
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sjPlot: New options for creating beautiful tables, documentation on #RPubs #rstats

A new update of my sjPlot package was just released on CRAN. This release focused on improving existing functions and bug fixes again. Especially the table output functions (see...

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R activity around the world

April 22, 2014
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R activity around the world

This project was inspired by "Where is the R Activity?" and our follow-up post on the number of useR! 2013 attendees. But instead of static maps, now we gathered...

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Demo file for the fanplot package

April 22, 2014
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Demo file for the fanplot package

I have added a demo file to the latest version of the fanplot package. It has lots of examples of different plotting styles to represent uncertainty in time series...

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Overlaying species occurrence data with climate data

April 22, 2014
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Overlaying species occurrence data with climate data

One of the goals of the rOpenSci is to facilitate interoperability between different data sources around web with our tools. We can achieve this by providing functionality within...

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Simple mortgage calculator

April 22, 2014
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Simple mortgage calculator

Have you ever thought of borrowing some money? A common case is when you have to borrow money for buying a house, which is called a mortgage. Wikipedia ('Mortgage...

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Rgitbook Package for Using R Markdown with Gitbook

April 22, 2014
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Last week I published an R script to interface with Gitbook. I received some positive feedback and decided to include all the code in an R package....

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Notes from the Tokyo R User Group meeting, 17 April 2014

April 21, 2014
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Notes from the Tokyo R User Group meeting, 17 April 2014

Last Thursday I had the pleasure to attend the Tokyo R user group meeting. And what a fun meeting it was! Over 40 R users had come together in...

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Simpson’s Paradox Is Back

April 21, 2014
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Simpson’s Paradox Is Back

The latest issue of the American Statistician has a set of thought-provoking point/counterpoint papers on Simpson’s Paradox, with a tie-in to the controversial issue of causality. (I will not...

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Seven forecasting blogs

April 21, 2014
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There are several other blogs on forecasting that readers might be interested in. Here are seven worth following: No Hesitations by Francis Diebold (Professor of Economics, University of Pennsylvania). Diebold...

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Exploring Factors with rCharts and factorAnalytics

April 21, 2014
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Fama and French changed the financial world with their factors in 1993.  Another duo Andrea Frazzini and Lasse Heje Pedersen have expanded our world with their Betting Against Beta...

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RStata: Funny or just annoying?

April 21, 2014
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RStata: Funny or just annoying?

Okay okay.  The joke is up.  Besides likely necessitating an emergency call to from the Stata Management Team to the Stata Legal Team, my post on April 1st of...

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Fracking and House Prices on the Marcellus Shale

April 21, 2014
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Fracking and House Prices on the Marcellus Shale

Starting last summer I worked on a short project that set out to estimate the potential costs of externalities due to unconventional shale gas production in the Marcellus shale...

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Webinar: Big-Data Trees for R

April 21, 2014
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If you missed last week's webinar presented by Revolution Analytics' US Chief Scientist Mario Inchiosa, Decision Trees built in Hadoop plus more Big Data Analytics with Revolution R Enterprise,...

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Singleton Remover CSV v0.3

April 21, 2014
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Singleton Remover CSV v0.3

I created a small program called Singleton Remover CSV to help researchers process files quickly that might otherwise take a long time to be handled by hand. The program...

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Modified lencat() — Increased Flexibility with dplyr

April 21, 2014
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Modified lencat() — Increased Flexibility with dplyr

One of the first functions in the FSA package was lencat(), which served me well over the years. However, I have been bothered by the use of a formula...

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Free interactive R exercises on OpenIntro

April 21, 2014
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Free interactive R exercises on OpenIntro

DataCamp first to offer free interactive R tutorials via the OpenIntro platform. In one week, the ten-week Coursera course on Data Analysis and Statistical Inference by prof. Mine Çetinkaya-Rundel...

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High incidence in Measles Data in Project Tycho

April 21, 2014
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High incidence in Measles Data in Project Tycho

In this third post on Measles data I want to have a look at some high incidence occasions. As described before, the data is from Project Tycho,...

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The Circus Tent Problem with R’s Quadprog

April 20, 2014
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The Circus Tent Problem with R’s Quadprog

The MathWorks has an interesting demo on how the shape of a circus tent can be modeled as the solution of a quadratic program in MATLAB. In...

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R-3.1.0 + OpenBLAS Speed Comparisons

April 20, 2014
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ooooooooooooooooooooooooooooooUntitled

With the recent release of R-3.1.0, and the near-recent release of OpenBLAS 0.29rc2, it was time to recompile Rblas.dll and do some new speed tests. The test computer has...

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OpenCPU release 1.3 and 1.4

April 20, 2014
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OpenCPU release 1.3 and 1.4

After a few months of testing we present OpenCPU versions 1.3 and 1.4. These releases do not introduce any major changes in the...

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Testing for Linear Separability with Linear Programming in R

April 19, 2014
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Testing for Linear Separability with Linear Programming in R

For the previous article I needed a quick way to figure out if two sets of points are linearly separable. But for crying out loud I could not find a...

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Play 2048… using R!

April 19, 2014
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Play 2048… using R!

I've lost about 100 hours over the past week to the black hole of 2048. In an attempt to...

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The Current Golden Era of the NBA

April 18, 2014
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The Current Golden Era of the NBA

We are in the midst of what many are calling a "golden age" of the NBA.  Being in the midst of a time where attention to the sport has...

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Old tails: a crude power law fit on ebook sales

April 18, 2014
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Old tails: a crude power law fit on ebook sales

We use R to take a very brief look at the distribution of e-book sales on Amazon.com. Recently Hugh Howey shared some eBook sales data spidered from Amazon.com: The...

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R and the weather in the local news

April 18, 2014
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R and the weather in the local news

The Mountain View Voice is a weekly newspaper serving the Silicon Valley area, and is a familiar sight to anyone wandering the streets of Palo Alto or Menlo Park....

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