[mkgmap-dev] Support for "through_route" relations?

Sat Apr 13 19:10:15 BST 2013

On 13/04/13 17:01, News wrote:
> http://wiki.openstreetmap.org/wiki/Proposed_features/through_route
>
> Anyone care to comment before I proceed??
>
> Thanks
>
> Paul
>
Looks great to me!

However - since there is a prototype implementation already in place, it 
might make sense to document how that currently works. I.e that there 
should exist a "relation" containing three items: two ways and a node. 
The node should be marked up with role=junction (or at least, this was 
the case, not sure if it's still the case). The two ways don't need to 
have roles marked up, but both need to stop or start at the node marked 
"junction".

As far as I know, that's it.

The existing bug (as I understand it) is that despite being set up as 
described, subsequent edits to the entry and exit ways results in the 
fragments of entry and exit ways all ending up in the relation. That 
takes the item-count to more than three and I think mkgmap then ignores 
it! Of course, mkgmap should count the number of ways that end or start 
at the junction, and proceed if there are two such ways - regardless of 
how many are actually in the relation....

Steve