Why is the relation not shown?
Topic on Help talk:Extension:Kartographer
It's apparently a geoline
. When I mark it as such it works.
The fact it doesn't work here on the talk page is a fascinating edge-case. As far as I can tell maps with external data just don't work on Flow talk pages because of it's architecture which bypasses pretty much everything other extensions like Kartographer expect.
I hope this helps.
Thanks, that helps a lot! But I guess the parser still has problems with this relation. If I enlarge the map on en:User:Bigbossfarin, the relation disappears. Also changing the color is not possible. One problem could be that the relation consist of many paths.
I included the map in w:Delaware Aqueduct.