Best graph ever. LARGEST EVER DIFFERENCE BETWEEN 328 and 327 SPOTTED IN NEW YORK CITY [Read more...]

On his recent tour to the Bay Area, Hadley Wickham have two interesting R-related talks, for which video has been made available by Google Tech Talks. At the June Bay Area R User Group meeting, Hadley spoke on the future of interactive data visualization in R. Building on his experiences ... [Read more...]

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Real-estate search website Trulia has a new tool to help you in your choice of a new home: crime maps. With local police forces being much better about sharing data crime maps are nothing new, but Trulia takes it to the next level with a slick user interface for navigating ... [Read more...]

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Pete Warden's Data Science Toolkit (which we mentioned briefly last week) is an open-source information server that provides an API you can query for information useful for building data science applications, like identifying proper names in unstructured text, or converting IP addresses to lat/long coordinates. You can make queries ... [Read more...]

I wrote this post months ago but never hit 'Publish'. But, the subject has changed little since then. So, here's to cleaning out the draft folder... R's connections are the heart of data/code/text input and output. Without connections, R would be crippled. Additional connections make R more ... connected ... [Read more...]

Inspired by the Facebook Social Network chart, FlowingData's Nathan Yau also turns to R to create a beautiful chart of the network of all flight connections between major airlines in the US: Like the Facebook chart, the chart reflects the intensity of the connections (here, the number of flights) between ... [Read more...]

Gompertz Model Visualization # Gomperz growth function gomp [Read more...]

The blog SAS Analysis shows how to create 3-D images from SAS data ... using R: Some SAS programmers like to use SAS/IML to call R’s functions [Ref. 2]. However, it seems that SAS/IML fails to work with the latest versions of R since 2.12 [Ref. 3]. Others tend to play ... [Read more...]

For a project I’m working on at work, I’m building a predictive model that categorizes something (I can’t tell you what) into two bins. There is a default bin that 95% of the things belong to and a bin that the business cares a lot about, containing 5% of ... [Read more...]

With Tax Day fast approaching here in the US, there's been a lot of discussion about tax policy and in particular the tax rates paid by the highest income earners. Like in many countries, here the income tax system is bracketed: Tax Bracket Single Married Filing Jointly 10% Bracket $0 – $8,375 $0 – $16,750 15% Bracket $8,375 – $34,000 $16,750 – $68,000 25% Bracket $34,000 – $82,400 $68,000 – $137,300 28% ... [Read more...]

The housing bubble by city. Miami sailed high and fell far. Detroit rose modestly and but dropped more than it went up. Dallas held steady. DC is enjoying a bit of renewed growth, but are in and New York yet to fall? [Read more...]

Faculty and students of Iowa State University Department of Statistics published online an analysis of the data on 2009 distributions of the US Stimulus funds, aka the Recovery And Reinvestment Act. (The analysis was published in March last year as part of the Design for America competition, but I only recently ... [Read more...]

Rahm Emanuel is now Mayor of Chicago, having successfully defended a court challenge to his candidacy and then 5 rivals in the February 22 election. The Chicago Tribune has put together an interactive map of the results (color-coded by the winner in each precinct), but for R hackers who would like to ... [Read more...]

The Web-based Flash game Canabalt, whose scores have been analyzed by R before, is now available as an iOS App. Because the app is configured to work on three different platforms: the iPad, iPhone and iPod Touch; and because players are invited to tweet their best scores at the end ... [Read more...]

Twitter played a significant role in the recent uprising in Egypt, with protesters communicating via tweets marked with the #25bahman hastag (February 14 in the arabic calendar) to plan and rally for the demonstration. Michael Bommarito downloaded all such tweets and plotted their frequency over time using R's ggplot2 library: Not ... [Read more...]

Yesterday was the one-year anniversary of the Haiti earthquake, and to put the scale of the event in context San Francisco bureau chief for New Scientist magazine and data journalist Peter Aldhous created a time-lapse animation of all large earthquakes in the last year, beginning with the 7.0-magnitude Haiti event. ... [Read more...]

The winners of the Mozilla Open Data Visualization competition "How Do People Use Firefox" have been announced. The competition attracted 32 entries, each visualizing an aspect of data collected in the Mozilla Test Pilot program to reveal insights about how people use the popular open-source browser Firefox. I was honoured to ... [Read more...]

Hans Rosling popularized Motion Charts -- 2-d scatterplots that animate over time -- with the GapMinder project. Motion Charts were taken to their augmented-reality extreme in this clip from the BBC programme, The Joy of Stats, but now you can create similar (if less audacious) motion charts for yourself with ... [Read more...]