Archive for the ‘Data Visualization’ category

How Genetics Works | FlowingData

March 5th, 2010

I love simplicty and you don’t get much simpler than this visual depiction showing How Genetics Works | FlowingData. Thanks, Nathan, for another excellent post! Short and sweet.

How to Make a Heatmap – a Quick and Easy Solution | FlowingData

February 23rd, 2010

How to Make a Heatmap – a Quick and Easy Solution | FlowingData.

The Ideological History of the Supreme Court of the U.S. (SCOTUS) – TargetPoint

January 21st, 2010
Snapshot of the latest SCOTUS ideological scores (source: targetpointconsulting.com)

Snapshot of the latest SCOTUS ideological scores (source: targetpointconsulting.com)

Andrew Martin (Washington University, School of Law) and Kevin Quinn (U.C. Berkeley School of Law) devised the Martin-Quinn scoring system to gauge the ideological flavor of courts. Alex Lundry applied that scoring system to the SCOTUS to create a fascinating visualization showing the conservative/liberal tendencies of each justice since 1937, along with an overall score of the entire court: The Ideological History of the Supreme Court of the U.S. (SCOTUS) – TargetPoint. He (along with Carl Roose who adapted the graphic for the web) clearly spent a lot of time going through the court’s history, applying the scoring system to show both by justice and collectively, by year, the court leaned.

The snapshot shown here is only the latest portion of the chart — take a look at the whole page for additional details, along with a couple videos, including an intro.

Interactive data visualizations with R

January 3rd, 2010

Jeroen Ooms, a visiting scholar at UCLA’s Department of Statistics, has been very busy with R — he has two wonderfully slick online apps where users are able (for free) to visualize datasets using R’s ggplot. If you’re interested in R, stocks, or just data visualization, you’ll find something of real value in his applications.

» Read more: Interactive data visualizations with R

the preservation of favoured traces | ben fry

December 31st, 2009

I’ve always enjoyed a nice graphical diff, like WinDiff, WinMerge, or KDiff3 — something that shows how a document has changed since some previous incarnation. Ben Fry, father of Processing, has taken this idea to an extreme with Darwin’s Origin of Species by showing how Darwin’s book changed with each revision, graphically depicting the variations in the document by chapter with each revision. » Read more: the preservation of favoured traces | ben fry

Data Scienist > Data Geek > Designer « Visualizing Economics

July 26th, 2009
Catherine Mulbrandons Data Scientest steps (per Ben Fry; from http://www.visualizingeconomics.com/2009/07/12/data-scienist-data-geek-designer/)

Catherine Mulbrandon's Data Scientest capabilities (per steps by Ben Fry; from http://www.visualizingeconomics.com/2009/07/12/data-scienist-data-geek-designer/)

Catherine Mulbrandon took Ben Fry’s 7 steps of data the  Data Scientest steps (from his PhD dissertation (page 30 etc), dated 1997 and reiterated in his Visualizing Data book, as he describes on his website) and graphed her own ability levels in each area.

Clever use of the original ideas, along with some additional “Testing” inserts of her own. In fact, as a programmer, I would argue for testing between each of these 7 steps. I wouldn’t dare use data (from step 1) without validating it, nor move to step 3 without ensuring that step 2 hadn’t trashed the data. Indeed, each step assumes a solid foundation from the earlier steps, though, as Mr. Fry mentions, the steps are largely iterative, not linear. True, thankfully.

[Thanks to DataVisualization.ch for the link.]

Turning Statistics Into Knowledge: Seminar Review and Notes

July 24th, 2009

I had the pleasure of attending the Seminar on Innovative Approaches to Turn Statistics into Knowledge, hosted by the US Census Bureau, the World Bank, and the OECD. While Robert Kosara, from UNC Charlotte, has a fairly thorough review (but not focusing on the technical aspects) of the seminar, and I would agree with most of his points (except for the presentation by David Spiegelhalter and Mike Pearson; their presentation was geared toward (and succeeded in) linking data with decision making), I didn’t read much about the technical side of things, so I thought I’d cover those areas here.

Here’s the low-down:

» Read more: Turning Statistics Into Knowledge: Seminar Review and Notes

Infographic: History of the American Flag

July 4th, 2009

Mike Wirth's History of the American Flag Infographic

Mike Wirth has posted a beautiful infographic on the history of the American Flag — how it became what it is today, complete with colonies for the red and white stripes and states for each of the stars. Fantastic, and just in time for July 4th!

[Thanks to CoolInfoGraphics for the link!]