Posts
348
Joined
7/5/2009
Location
Las Vegas, NV, USA
Edited Date/Time
5/11/2016 7:33pm
Some of you may know I was doing some stats as the sx season was going on. I'm working on some stuff to do it a little better during the nationals, but what I think is cool and interesting may not be the same as everyone else. I'm open to suggestions and comments on what kind of stuff might be cool to analyze during the season, and I'll see if I can get it done.
Good job on Pulp, just stay humble! I do enjoy the stats too!
- End of First Lap Position vs Last Lap Position
- Lap Time Trend
- TY vs LY Points YTD for Riders that comped
Just some ideas off the top of my head which may be cool to chart out.
Let me know if you need any help with data structure or be more specific on what I am thinking.
Oops... looks like you were already doing most of what I suggested.
Some stuff I'd like to see are fast lap, slow lap, median lap, range, standard deviation, per rider and for all riders, I'd also like to see the same for each of the segment times.
With your json peeping, I'd like a chart that includes real time rider point standings.
Also if there is a way to extract start times (time from start to hole shot line) not position crossing the hole shot line, that would be interesting.
Just some things I'd like to see.
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Like Junkyard Dawg at Southwick is good but at others he's not and local riders as at RedBud do better there than at any other track.
Be something to look at while setting up your weekly Fantasy league plus it would be interesting read as to where riders do better at than others.
Good Stuff!
Average the mass lap time for the entire field and throw out anything beyond a certain standard deviation so you don't get the parade lap or that lap during practice where a guy was cruising, standing up in 2nd gear spotting lines.
Make a simple graph that shows the relative track speed on the Y axis and time of day on the X axis.
You will probably have to do this separately for 250cc and 450cc because conditions effect them in different ways.
With some clever statistics, you may be able to use an 'offset' algorithm between the two bike sizes and combine the data. A 250F is going to be slower in a fresh deeply tilled track and closer in speed on a hard-pack track with well developed lines where they can carry speed for example.
Of course this can become way more complex if you really want to show everything.
If you poll data from NOAA or maybe Wundeground to get radar precipitation and weather info for the exact location of the track and present temperature, wind, humidity and rainfall in the background of the chart at each time of day.
With a clever presentation, this would really show how a track changes throughout the race day and what that means for lap times and racing. Use the data from the past few years to test it out before the season begins.
By the way, great job on PulpMX. Like captcrunch said, stay humble.
http://www.vitalmx.com/photos/member/Crisp-BRAAAP-s-album,4026/Jacksonv…
[Interesting to note that Decotis was getting tired back then but Stroupe's times were solid all the way through. Damn it...that guy.]
But I didn't have Travis' mad PDF scrapping skills, so I had to do the data entry by hand. That sucked and sort of stopped the analysis.
I actually liked the dot plots in this thread.
It allows you to plot every rider on the gate and see all the data at once - I actually like to present my scientific data this way since it can be hard to visualize what the error bars actually mean (or easy to hide behind them if you have ugly data). The hard part about the dot plots is that you don't know which lap each dot represents.
The other hard part in presenting the data is knowing if someone is slowing down because they can (their position is safe and they can't catch anyone) or because the anchor is out and they're sucking wind.
One thing that could be interesting is to compare rider's practice times with what they do in the race. Reed, for example, is notorious for not qualifying well but racing to the front anyway. So does his lap time go up in mains relative to practice, or is it his ability to run the number lap after lap? Not sure how you'd do it, but it would also be interesting to compare them to other riders too since the track condition is always changing so you'd need a way to normalize the data to the track conditions: I'd think that'd be the mean or median lap times in a given session.
keep it going.i like the pulp show better. you actually know when to speak and when to shut it.
as above ,avg practice time rank vs finish position.
most riders passed all season.
I wonder how much of that is due to the fact that those two guys were/are so ultra talented and smooth that they don't use or waste as much energy per lap.
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