Author Topic: [HAMR] Visualizing the OYTT  (Read 168336 times)

Re: Visualizing the OYTT
« Reply #325 on: March 15, 2015, 05:26:23 pm »
Day 72: Another solid 214 miles for Steve heading back from Hull to MK. More rain for Kurt and then GPS problems prevent some of his ride from being uploaded and to cap it all, problems with his light bracket cut short his evening riding. The impact of "only" a recorded 58 mile day on his progress shows how vulnerable both riders are to even a small interruption.


Jo - do you 'correct' the Strava data to match the official HAMR spreadsheet, or just work with the original Strava track logs?

Echoing other posts, I am enjoying your daily updates.

Re: Visualizing the OYTT
« Reply #326 on: March 15, 2015, 06:05:32 pm »
Another vote of thanks for the excellent visualisations, Jo. The first thing I check in the morning is the GI Centre page, followed by the Spot tracker.

Re: Visualizing the OYTT
« Reply #327 on: March 15, 2015, 06:29:35 pm »
Top work Jo  :thumbsup:.

Dammit - Kurt's Day 73 shows just what a couple of interrupted days can do. This is such a relentless challenge!

Re: Visualizing the OYTT
« Reply #328 on: March 15, 2015, 07:10:24 pm »
Sort of.

Another way of looking at it is that totally blowing a day at this stage of the game means significantly less than 1 mile extra per day for the rest of the year.

mattc

  • n.b. have grown beard since photo taken
    • Didcot Audaxes
Re: Visualizing the OYTT
« Reply #329 on: March 15, 2015, 07:19:27 pm »
Sort of.

Another way of looking at it is that totally blowing a day at this stage of the game means significantly less than 1 mile extra per day for the rest of the year.
Very true.

that's the beauty of long distance riding; you don't have to sweat the small stuff (like p***tures). I've yet to ride an Audax where I could take a whole day off the bike, but I know Steve has taken several off mid-perm!
Has never ridden RAAM
---------
No.11  Because of the great host of those who dislike the least appearance of "swank " when they travel the roads and lanes. - From Kuklos' 39 Articles

red marley

Re: Visualizing the OYTT
« Reply #330 on: March 15, 2015, 08:41:47 pm »
Jo - do you 'correct' the Strava data to match the official HAMR spreadsheet, or just work with the original Strava track logs?

I normally use the Strava data directly. My code will detect and account for segments where the track has been paused between transfers and also flash warnings if there appears to be an unfeasibly fast segment (as occurred on the day Kurt forgot to switch the device off during a transfer). I periodically check my results against the official record and have on a couple of occasions changed my distance figures to match the official ones (e.g. the day that a short 10km track was excluded from Kurt's official record for some unknown reason). For Steve, I also add a small correction factor to the distance to account for the anonymisation of his home location added by Strava.


And thanks for the kind words everyone  :-[ Much appreciated.
 

red marley

Re: Visualizing the OYTT
« Reply #331 on: March 16, 2015, 05:53:18 am »
Day 74: Kurt is back on form clocking 222 miles in balmier temperatures and dryer conditions in Little Rock. Steve takes a  206 mile return trip from MK to King's Lynn.


red marley

Re: Visualizing the OYTT
« Reply #332 on: March 17, 2015, 06:29:38 am »
Day 75: Another fenland trip for Steve under grey skies and a cold wind allows him to accumulate a further 218 miles. Kurt is back in his rhythm riding for 210 miles from Little Rock edging back in the direction of WR pace.


Re: Visualizing the OYTT
« Reply #333 on: March 17, 2015, 06:45:45 am »
Superb riding by these two. Superb graphs and summaries, thanks again Jo!

Re: Visualizing the OYTT
« Reply #334 on: March 17, 2015, 07:50:32 am »
Just a thought but there has been chatter both on here and on Strava about relative heart rates v speed. How easy would it be to plot Av. Hr v Av. Speed as a scatter plot and add a best fit line to show any trend?

Mr Larrington

  • A bit ov a lyv wyr by slof standirds
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    • Mr Larrington's Automatic Diary
Re: Visualizing the OYTT
« Reply #335 on: March 17, 2015, 08:11:36 am »


Another Fenland tip, yesterday

External Transparent Wall Inspection Operative & Mayor of Mortagne-au-Perche
Satisfying the Bloodlust of the Masses in Peacetime

Wowbagger

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Re: Visualizing the OYTT
« Reply #336 on: March 17, 2015, 09:17:35 am »
Bzzzt... Deviation. The road is lower than the field, and there's a hedge. That's not Fenland. In fact, I'm sure I recognise it, so it must be Essex.
Oh, Bach without any doubt. Bach every time for me.

Vince

  • Can't climb; won't climb
Re: Visualizing the OYTT
« Reply #337 on: March 17, 2015, 09:30:15 am »
But perhaps you should tell Blodwyn Pig where it is.

Thanks for the graphics and commentary Jo.
216km from Marsh Gibbon

Mr Larrington

  • A bit ov a lyv wyr by slof standirds
  • Custard Wallah
    • Mr Larrington's Automatic Diary
Re: Visualizing the OYTT
« Reply #338 on: March 17, 2015, 10:18:10 am »
The outfit from whom I borrowed the photo have bases in Bedford, Peterborough, Cambridge, St Ives and Ramsey.  Pretty damn' fenny.
External Transparent Wall Inspection Operative & Mayor of Mortagne-au-Perche
Satisfying the Bloodlust of the Masses in Peacetime

Re: Visualizing the OYTT
« Reply #339 on: March 17, 2015, 10:47:30 am »
Fenny peculiar, or fenny ha ha?  ;D
9 miles SW of Marsh Gibbon

HTFB

  • The Monkey and the Plywood Violin (RIP)
Re: Visualizing the OYTT
« Reply #340 on: March 17, 2015, 11:59:17 am »
A fenny ha-ha is a dyke.

red marley

Re: Visualizing the OYTT
« Reply #341 on: March 18, 2015, 06:07:30 am »
Day 76: Kurt heads back SE towards Mississippi and returns to his previous form with 211 miles for the day. Steve takes a few diversions to Marsh Gibbon on his ride up to Derby making it a double century.


red marley

Re: Visualizing the OYTT
« Reply #342 on: March 19, 2015, 06:44:17 am »
Day 77: Kurt, nursing a nasty insect sting to his eye, joins the Natchez Trace for a scenic 213 miles to Jackson Mississippi. Steve has his shortest day yet comprising a rolling 142 miles and early finish from Derby back to MK.


hillbilly

Re: Visualizing the OYTT
« Reply #343 on: March 19, 2015, 06:57:46 am »
Yet another occasion where a lighter than usual day for one of the contenders highlights how relentless and intimidating this challenge is.  Take your foot off the gas and your progress visibly stalls.

Re: Visualizing the OYTT
« Reply #344 on: March 19, 2015, 07:11:41 am »
I just see a compression of the vertical and horizontal scales, over-dramatising minor blips.

hillbilly

Re: Visualizing the OYTT
« Reply #345 on: March 19, 2015, 07:18:01 am »
Yeah, you're probs right. That's also likely to be a story over the year.  These apparently dramatic drop offs will be barely perceptible in the context of the full 12 months.  A bit like the daily wiggle smoothed out.

red marley

Re: Visualizing the OYTT
« Reply #346 on: March 19, 2015, 07:30:17 am »
Possibly. While its certainly true that our current day-by-day analysis is 1/365th of the big picture, it remains the case that it is much easier to lose significant distance than it is to gain it. Both Kurt's recent shorter days and Steve's single day yesterday are visible in the full year picture. It shows how unrelenting is the pressure on both riders.


Re: Visualizing the OYTT
« Reply #347 on: March 19, 2015, 08:09:43 am »
'The secret to riding time trials well is not to ride fast but to not ride slow'

Graeme Obree said something along those lines in his book.  I think the impact of the short days on both riders' shows it applies to this event as much as to a 10 mile chase up a dual carriageway. 

Steve's 'short' day yesterday wiped out the impact of all the long days he had ridden in the last fortnight, taking him back to the -1100 contour line.  Kurt's couple of short days put him further behind the average rate than he had ever been. 


Re: Visualizing the OYTT
« Reply #348 on: March 19, 2015, 08:58:46 am »
Possibly. While its certainly true that our current day-by-day analysis is 1/365th of the big picture, it remains the case that it is much easier to lose significant distance than it is to gain it. Both Kurt's recent shorter days and Steve's single day yesterday are visible in the full year picture. It shows how unrelenting is the pressure on both riders.



The Tommy Godwin line also clearly shows this as it is obvious where he too his one day off in the year.

Re: Visualizing the OYTT
« Reply #349 on: March 19, 2015, 03:53:22 pm »
It's interesting to think of this feedback as part of a complex control system.
These graphs are a key indicator. I wonder if an emphasis on keeping the plots smooth is in conflict with a sustainable approach. Kurt's got an IT background, so a cybernetic view might appeal to him. That might make a good title for an article, 'The ride of the cyber-men'.
Publicity is the other obvious feedback path, hopefully generating some funds for Kurt.