Final TdF Plots

Finishing up this tour plot thing - here's the final individual stage placings with the jersey holders and initial GC contenders highlighted.



The whole sawtooth trend from day-to-day held true throughout the tour, huh!?

Here's how things progressed from a GC perspective:



How many "GC days" would you pick out from this plot?

Power File Databasing

Spent a wee-bit of time figuring out how to decode the binary bits and bytes of the SRM power meter file format.


Great insight and c++ code over at goldencheetah.org.

Here's the first little bit of code in the script I wrote for batch importing SRM files and creating a matlab database for subsequent analysis:





With this piece of code, it's pretty easy to simplify big jobs like putting together plots like the following for 300+ power meter files (this plot was kind of inspired by Dr. Allen Lim of the Saris Group in this Q&A tidbit - http://www.saris.com/t-PowerTourQA.aspx#NormalizedPower ):






For those interested in further reading about this plot that orginally appeared in an old article on the main btr site you can check out:

http://www.biketechreview.com/power/strain.htm


not much has changed globally since 2004/2005, eh?


Anyway, this database creation tool I've created is pretty cool - it sequentially opens up each individual file in the native SRM format and processes the data any which way you like - well, at least any which way you can code something up! pretty cool, huh!?

oh, man, I'm a total dork... ;-)

TdF Stage 10

Stage Placings today:

The see-saw pattern we saw early on re-emerges.

The GC after today:



Just looking at this plot, how many guys were in the break today?

TdF Stage 9

Stage Placing Plot:

GC after stage 9:

TdF Stage 8

Here are some plots of interest through stage 8.

This one is the daily stage placings:








and the GC through stage 8:

TDF Stage 4

This new plot was based on a suggestion in the BTR forum from DMC (he wanted to see where the GC contenders were finishing in each stage). Here is what that plot looked like after stage 3:

And after today's stage 4:

Here's what the GC plot looks like - I reckon on the "GC days" we'll see some action on this sucker!