Blog Archives

Vivid: Toward A Next Generation Statistical User Interface

February 21, 2019
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We are announcing the development of a new statistical user interface for R. I'm really excited about it and I hope that your will be too. Vivid is a rich document format deeply integrated with RStudio that mixes user interface elements, code and output. I firmly believe that the next million R users are going

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Long Running Tasks With Shiny: Challenges and Solutions

July 30, 2018
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Long Running Tasks With Shiny: Challenges and Solutions

One of the great additions to the R ecosystem in recent years is RStudio's Shiny package. With it, you can easily whip up and share a user interface for a new statistical method in just a few hours. Today I want to share some of the methods and challenges that come up when the actual

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New Book in Text Analysis for R

May 11, 2017
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Focus for books on R tend to be highly focused on either statisticians or programmers. There is a dearth of material to assist those in typically less quantitative field access the powerful tools in the R ecosystem. Enter Text Analysis with R for Students of Literature. I haven't done a deep read of the book,

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New Version of the OpenStreetMap R Pacakge

September 13, 2016
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New Version of the OpenStreetMap R Pacakge

A new version of the OpenStreetMap package has been released to CRAN. OpenStreetMap 0.3.3 contains several minor improvements. I've removed the CloudMade tile set types, as they seem to have gone out of business. MapQuest has also been removed as they have moved to a new API. The mapbox type has been updated to use their

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Insert and Remove Performance of Boost’s flat_set v.s. std::set

January 16, 2014
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The standard way to represent an ordered set of numbers is with a binary tree. This offers a good mix of performance properties as the number of elements gets large. In particular it offers O(log(n)) operations insertion/deletion, O(log(n)) operations to find an element. Finding the ith element of the set takes more time, O(n) operations

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The OpenStreetMap Package Opens Up

April 14, 2013
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The OpenStreetMap Package Opens Up

A new version of the OpenStreetMap package is now up on CRAN, and should propagate to all the mirrors in the next few days. The primary purpose of the package is to provide high resolution map/satellite imagery for use in your R plots. The package supports base graphics and ggplot2, as well as transformations between spatial coordinate

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Interview by DecisionStats

April 5, 2013
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Ajay Ohri interviewed me on his popular DecisionStats blog. Topics discussed ranged widely from Fellows Statistics, to Deducer, to statnet, to Poker A.I., to Big Data.    

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Quickly Profiling Compiled Code within R on the Mac

April 3, 2013
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Quickly Profiling Compiled Code within R on the Mac

This is a quick note on profiling your compiled code on the mac. It is important not to guess when figuring out where the bottlenecks in your code are, and for this reason, the R manual has several suggestions on how to profile compiled code running within R. All of the methods are platform dependent, with linux requiring command line tools

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Great Infographic

March 4, 2013
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This is a really great exposition on an infographic. Note that the design elements and "chart junk" serve to better connect and communicate the data to the viewer. The choice not to go with pie charts for the first set of plots is a good one. The drawbacks of polar representations of proportions is very

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Climate: Misspecified

December 4, 2012
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Climate: Misspecified

I'm usually quite a big fan of the content syndicated on R-Bloggers (as this post is), but I came across a post yesterday that was as statistically misguided as it was provocative. In this post, entitled "The Surprisingly Weak Case for Global Warming," the author (Matt Asher) claims that the trend toward hotter average global temperatures over the last

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