A Data Visualization Blog by Kyle Biehle (on twitter @kbiehle2)

Sunday, July 22, 2012

The 2012 Tour de France General Classification History by Stage


On Sunday, July 22, Bradley Wiggins became the first Brit to win the Tour de France.   He did it with an amazing supporting cast, including Chris Froome who finished second overall - only three minutes behind Wiggins after more than three weeks of racing. Some think that Froome was strong enough to beat his captain, but he stuck to the script and worked for Wiggins, and Team Sky placed two riders on the podium in Paris.

Sky wasn't the only team with some leader drama at the tour. Cadel Evans, the defending champion on BMC, also had a supporting cast member nipping at his heels. American Tejay Van Garderen placed fifth overall in the GC -  two places ahead of Evans - and took the "Best Young Rider" award.   Like Froome, Van Garderen stuck to the script and supported Evans throughout most of the tour.  However, on Stage 16 in the Pyrenees, when Evans was fighting a stomach bug, Van Garderen picked up three minutes on his captain and leap-frogged him in the GC. 


The Viz

This viz plots all of the riders’ positions in the General Classification across the first 19 Stages of the race.   The riders are color-coded by team. The line chart shows the progress and position of each rider across all the stages.  Position is plotted on the vertical axis and Stage # is on the horizontal. Reference lines have been added to show when “shake-up” stages occurred – either mountain-top finishes or individual time trials.

 There are two lists which can be used to filter the line chart. The "Rider" list on the left (which is stack-ranked by the rider's place after Stage 19) will pull up that rider’s whole team with the selected rider highlighted.  Use the "Ctrl" key to highlight multiple riders at once. The "Team" list on the right will pull up all of the riders from a team.  Those riders that did not finish (the "DNFs") are listed at the bottom of the rider list grouped by the last stage they completed before dropping out.  There is also a "wildcard" search field above the rider list to search for riders by name.


The default line chart view shows riders by their position on the GC. You can also show riders by "Time from First". This ranks the riders by fractional hourly time gaps. The y-axis is set to "logarithmic" view so that there is more separation of riders at the top of the GC.  Exact info (or rider position and time from first) is available in the mouse-over tooltips. Additionally you can filter specific stages by using the slider. The Stage labeled "0" is the Prologue.


2 comments:

  1. Very cool visual. Froome could have taken Wiggins I am quite certain if he had a team working for him.

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  2. Very robust viz, but what adds to its value is the speed in which it was produced and made available. Very fine work, Kyle! ~I can't read these names without hearing the Phil Liggett accent!

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