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Discussion: Digital checking of map compliance to ISOM17

in: Orienteering; Gear & Toys

Aug 3, 2018 7:16 AM # 
TheInvisibleLog:
I am trying out the OCAD legibility checking tool. It seems to me to be rather rudimentary compared to the advice in the ISOM spec. I am wondering of anyone has worked out an method to use the tool efficiently?
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Aug 3, 2018 8:49 PM # 
Terje Mathisen:
To check minimum distance between same-color objects you have to run the tool multiple times since you can only specify one distance even though the minimum depends on the color. If you place stony ground dots by hand then you need to hide this symbol before checking, otherwise you can get several 1000 errors.

We have decided that an impassable cliff that has passable ends can be OK even though those ends in isolation can be too short, the gestalt is still perfectly readable. This is similar to the situation with yellow on the JWOC Long map this year where individual yellow areas must have been too small and/or too narrow, but the map was still readable because competitors see this as an ensemble, not as individual clearings.

IOF MC agrees with Norway MC that the green minimum should be the same as for blue, i.e. 0.40 afair.
Aug 4, 2018 5:35 AM # 
TheInvisibleLog:
The issue that has frustrated me is rocky ground individual dots. For fight rocky ground the minimum is .05. But as far as I can tell, its back to .15 between any dot and another black feature. How to test for the second without heaps of false positives between black dots? Hiding the black dots won't help. Its almost like there needs to be a matrix of minimum distances between all feature combinations. Testing such a matrix of requirements with the present tool is impractical. I assume that those testing will be taking short cuts.. satisficing. The question has been raised here about what satisficing the IOF will be accepting when they test maps for regional champs etc. Some guidance would be helpful. Maybe a process flow chart. Or am I just being an orienteer and making something far too complex?
Aug 4, 2018 6:54 AM # 
simmo:
Will IOF cancel all the results from any event where the map does not comply?
(frivolous question :-)
Aug 4, 2018 7:06 AM # 
TheInvisibleLog:
Realistic question. At what stage in the event preparation have you reached the point where the IOF cannot afford for the event to be cancelled. After all, the new spec only applies to events where the IOF gets a sanction fee.

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