Articles by Andrew Gelman

Whassup with glm()?

May 4, 2011 | 0 Comments

We're having problem with starting values in glm(). A very simple logistic regression with just an intercept with a very simple starting value (beta=5) blows up.... [Read more...]

Trends in partisanship by state

January 24, 2011 | 0 Comments

Matthew Yglesias discusses how West Virginia used to be a Democratic state but is now solidly Republican. I thought it would be helpful to expand this to look at trends since 1948 (rather than just 1988) and all 50 states... [Read more...]

World Economic Forum Data Visualization Challenge

October 28, 2010 | 0 Comments

Jaidev Deshpande writes: The World Economic Forum recently posed a data visualization problem. The dataset is a survey of experts from the so called "Agenda Councils" of the WEF. Here are the details. The dataset primarily contains the experts... [Read more...]

A use for tables (really)

October 27, 2010 | 0 Comments

After our recent discussion of semigraphic displays, Jay Ulfelder sent along a semigraphic table from his recent book. He notes, "When countries are the units of analysis, it's nice that you can use three-letter codes, so all the proper names.... [Read more...]

Getting arm and lme4 running on the Mac

October 17, 2010 | 0 Comments

Our "arm" package in R requires Doug Bates's "lme4" which fits multilevel models. lme4 is currently having some problems on the Mac. But installation on the Mac can be done; it just takes a bit of work. I have two... [Read more...]

Ross Ihaka to R: Drop Dead

September 13, 2010 | 0 Comments

Christian Robert posts these thoughts: I [Ross Ihaka] have been worried for some time that R isn't going to provide the base that we're going to need for statistical computation in the future. (It may well be that the future... [Read more...]

The future of R (2010)

September 8, 2010 | 0 Comments

Some thoughts from Christian, including this bit: We need to consider separately 1. R's brilliant library 2. R's not-so-brilliant language and/or interpreter. I don't know that R's library is so brilliant as all that--if necessary, I don't thi... [Read more...]

A data visualization manifesto

May 31, 2010 | 0 Comments

Details matter (at least, they do for me), but we don't yet have a systematic way of going back and forth between the structure of a graph, its details, and the underlying questions that motivate our visualizations. (Cleveland, Wilkinson, and.... [Read more...]

Updated R code and data for ARM

May 19, 2010 | 0 Comments

Patricia and I have cleaned up some of the R and Bugs code and collected the data for almost all the examples in ARM. See here for links to zip files with the code and data.... [Read more...]

Some sort of update to ggplot2

November 22, 2009 | 0 Comments

Jeroen Ooms writes: Here's a first version of a new web application for exploratory graphical analysis. It attempts to implement the layered graphics from the R package ggplot2 in a user-friendly way. This two-minute demo video demonstrates a ... [Read more...]
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