[OSM-talk] trunk_link & ref=*

Lennard ldp at xs4all.nl
Fri Sep 25 12:21:46 BST 2009


Dave F. wrote:

>> Personally, I don't think these should be rendered on the main maps,
> osmarender:renderRef is a tag to prevent rendering.

I said 'maps', plural. One renderer's trick of not showing certain 
features is certainly the wrong approach to this.

>>  and they should not be made up by us if there is no real ref on the ground.
> Would they not be essential for routing software?

Why would you think that made up refs would be? Why would you even think 
that refs would be essential at all for routing? The only thing they are 
good for in the router is to give the driver better instructions.

"Take the next exit, and follow the A29"

Now, if I'm on currently not on the A29, and I get this instruction, 
what is unclear about that? I see an exit coming up, probably even 
reinforced with signs pointing out that that is the direction to take 
for the A29. Clear and to the point.

"Take the next exit, follow the slip road A58-A29*, then follow the A29".

Exactly how would this be better? "A58-A29" won't be on signs, and it 
tells me non-essential information that could confuse me.

* Assuming this is what we in OSM made up as a ref.

-- 
Lennard




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