Discussion: Borås WC mapping

https://twitter.com/tommihakuli/status/15309284067...
There were a LOT of problems with the map at Borås sprints. Mapping is very important in sprint and more so at the world cup level because of the speed of the runners.

I just learned how to say "WTF" in Finnish!

Less is more.

Funny how after all the guidelines documents and everything they still managed to get that multilevel thing so much wrong. The rest is most likely for just converting city base map to sprint symbols without bothering much how it ends up. Well, cheapest that way for sure.

To be fair, the planners had done the sensible thing and put a control in the entrance to the subway, so it would have taken a perversely bad routechoice to cross at the incorrectly-mapped-as-crossable street level. [Edit: ignore me; I forgot that the courses went the other way through the subway at the start of the course. Personally, I would just have given them that control twice.]

Worse, I think, are the thick purple lines bounded by tiny strips of olive green that did for Daniel Hubmann, among others, in the knock-out qualifier (see the 163-175 leg): https://eventor.orienteering.org/Documents/Event/5...

That seems like a weird thing to do, having a purple bar at one end and purple cross hatch behind it (admittedly my experiences with artifical barriers is somewhat limited and perhaps this is the norm for these large scale events). In all instances it seems that the purple bar is the likely approach direction - I presume there was a physical barrier (tape, temporary fence, etc) placed there but nothing in the cross hatch area.

Such purple bar with cross hatch is nothing new. Easier to spot on map than just the bar or tiny strip of cross hatch. But here they did not draw the purple all the way between buildings. Instead they left tiny pale gaps between purples and dark buildings indicating there is a gap one may be able to pass. But that pale color is olive green, once even without a border line (that's no-no).

The whole point of using such purple bar & hatch is making it clear you can't pass. Here they instead created questionable pale gaps with that purple.

Reminds me of a story. There was a swede, a norwegian, a swiss and a kiwi at a bar. The... Hang on, what's the punch line again?

Was there an actual fence on the ground at the purple bars across the road? Some of them seemed to be placed a long way beyond the junction such that nobody on any sane legal route would ever see them.

I'm not sure if this is standard or not but I would expect purple boundaries like that to be marked with tape. If they are using some kind of actual fencing like crowd control or snow fencing I would prefer it to be mapped as an impassable fence.

The consistent issue in these maps is use of combinations of passabble and impassable symbols. A passable fence on top of a impassable wall. Impassable hedge bordered with passable fence or passable wall. Impassable fence on top of a passable wall. None of the ISSprOM examples has such mapping, but I wonder is it clearly written somewhere we shouldn't map like that?

Either a feature is passable or it's not - it can't be both. Sticking a passable feature on or next to an impassable one is not helpful (or possible if it's on top of).

Also there is this: Gap between two line symbols of the same colour: 0.15mm, which kind of implies not to have them on top of each other.

Passable wall next to impassable hedge sounds reasonable.
https://goo.gl/maps/LejvZS4PSGi1u3sQ7