King of the Quarry…
Posted: 22 June 2008 07:09 PM   [ Ignore ]  
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So, just who is the most accurate sprint navigator in the club? Who got through the 5 quarry legs at Lancing Manor without error. Who can be rightly crowned ‘King of the Quarry 2008’?

http://picasaweb.google.co.uk/orienteeringrob/KingOfTheQuarry/photo#s5214766937347545330

It’s Julia Jarvis, England runner and winner of the fine navigation challenge in Stanmer Park in 2004. It couldn’t have been closer with just one second separating Julia from 2nd place Peter Chapman. Just as impressive are the three junior performances by Mark Lambert, Lucy Thraves and Nick Jarvis, all inside the top 10.

Who will be crowned ‘King of the Campus 2008’ in just 6 days’ time?

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Posted: 23 June 2008 02:46 PM   [ Ignore ]   [ # 1 ]  
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...and the picture results show in those top 16 or so people that they were all from the local club (except 1) - which begs the question, who has not actually been to the area before?!? ;-) Some may have been a handful of times so really shouldn’t be making any mistakes!

Overall splits - was great to see Lucy Thraves taking 2 of the fastest splits - “If you can keep your head while all around you are losing theirs...”

Looking forward to proper ISSOM map at 1:4000 with correct sized symbols and accurately updated for next time.... :-)!! rather than a 1:7500 blow up.

Nevertheless, a slick run event as usual, a challenging course (nice to have comments from Kenny on his planning thoughts) and a good job all round. Well done SO.

Having just seen draft (?) of the end of August SE Sprint Race Champs, it is all looking very exciting stuff down in SO-land.

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http://www.CompassSport.co.uk

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Posted: 23 June 2008 08:35 PM   [ Ignore ]   [ # 2 ]  
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Hi Robert,

I did enjoy it, also I think it added information greatly after the race. But I don’t understand about the error aspe it ( http://www.obasen.nu/winsplits/online_new/Default.aspx?d=9801&c=0&i=6 ).

High percent - good or bad
Low percent - good or bad
None percent - same position?

I noticed Nick’s error for No.8 control but it didn’t say his percentage. I was confused. It is new for me. Please can you explain it to me it and what explain what the green and red. I can’t read it because it is from Scandinavian.

Thanks
Lee

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Posted: 23 June 2008 09:02 PM   [ Ignore ]   [ # 3 ]  
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Hi Lee

The colours suggest pack running. Green that you led a pack, red that you were led by a pack.

Red squares mean that you punched just after someone else. The higher the percentage the closer you were to them. Green squares suggest that you were being followed. Similarly the higher the percentage the closer they were to you.

A row of blank squares suggests that you were running on your own the whole time.

Obviously this is all just a bit of fun :)

Cheers

Rob.

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Posted: 24 June 2008 09:02 AM   [ Ignore ]   [ # 4 ]  
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I like this system. Is it a one off system or is it something that can be used at our events? What is this system/method called?
The reason I ask if it can be used at every event is because it is interesting to see if people follow a leader or if they led a pack.
Is the software used to determine this available to download (for free?)

I have one more question about the coloured brackets - the high and low numbers on the 4th and 5th column - which is the better results? Is it the lower the number the better?

Thank you for answering all my questions and your advice.

Cheers
Lee :-)

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Posted: 24 June 2008 11:16 AM   [ Ignore ]   [ # 5 ]  
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Hi Lee

The software is called WinSplits Pro http://www.obasen.nu/winsplits/default.aspx?lang=en

I think it costs about £50. (Since I had the original version I paid less to upgrade it.)

The free online version has limited and varying functionality. It just happened to be that this week they were demo’ing the ‘Pack Running’ function.

If you like it, I’ll load up some screen shots from my personal version in future (if it’s not available online).

Cheers

Rob.

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Posted: 24 June 2008 01:17 PM   [ Ignore ]   [ # 6 ]  
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This situation looks like a statisticians dream – you can read a lot into the results – some relevant – a lot not that relevant!

Whilst all these observations are interesting and a bit of fun (and if they motivate people onto better things, so much the better): the important thing is to try to put them into some sort of context.

I think that local knowledge is certainly useful in an area like the quarry, although that is not the main influence on success. The area has been well used over the years, but vegetation has not been constant and the recent event used a number of new control sites. Correct map reading and terrain interpretation therefore very much required! The apparent domination of the King (Queen?) of the quarry listing by SO members could be due to several reasons, not least that SO is a Sussex based club, taking part in a Sussex league of events. Of the 54 participants on the Sprint course, 4 represented non-SO clubs and 4 were IND(ependant). INDs are most likely to be relative novices so unlikely to be heading a results table. This leaves less than 10% non-SO, and 10% of 16 is one or two people => 1 out of 16 is entirely expected.

The following stat is quite interesting too – with 50 odd people setting off over the course of an hour, all running at different speeds, then a bit of congestion is inevitable. If you decide your route, look up and see someone else is already executing the same route choice, what are you expected to do – deliberately go somewhere else?! It is never easy to pull away from a pack in an area with good visibility and on a course with short legs. Personally, I don’t think that I would read to much into the drag index stuff. The important thing to remember is that you are very unlikely to actually win by following – by definition, there is someone always ahead of you – so no real gain.

I join with Rob and Nick to applaud the results of a number of the junior SO runners – attention to the right detail at the right time is obviously what they were doing (and better than many of the “old-hands” too!).

SO have discussed about aiming to get all of the Sprint-O area maps produced with ISSOM 2007 cartography (Sprint-O style and map symbols) – this is a longer term aim for areas that have most recently been mapped as general purpose O areas to ISOM 2000. The most recent map for Lancing is for a permanent course covering a larger area, and ISOM 2000 is more relevant to that. There is a reasonable amount of work involved in converting from one mapping standard to the other. We shall see how the season progresses as to how far SO have got in this respect.

NB my most important lesson of the day was: that I need to read the control descriptions with a bit more detail. A quick look for control number and the type of feature (my usual style!) was not always enough. There were at least two controls where I could’ve saved a few more seconds by checking where on the feature the control would be.

My thanks to all concerned for the event – very enjoyable!

Peter

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Posted: 24 June 2008 09:39 PM   [ Ignore ]   [ # 7 ]  
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Peter Chapman - 24 June 2008 01:17 PM

There is a reasonable amount of work involved in converting from one mapping standard to the other. We shall see how the season progresses as to how far SO have got in this respect.

It shouldn’t be. ISOM can be fairly accurately transformed into ISSOM. The problem arises when mappers decide to invent their own symbols - the ubiquitous quick and dirty solution to a cartographic problem. Having recently converted the Horsham ISOM map to ISSOM I found that 90% of the conversion could be done in a couple of minutes. The last 10% took several more hours.

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