Re: [Talk-transit] Summary of Public Transport Proposal Criticism - a real example from Zürich
On 02/05/2011 06:09 PM, Richard Mann wrote: On Sat, Feb 5, 2011 at 12:32 AM, Michael von Glasow mich...@vonglasow.com wrote: if I may just comment on the relation: I would also use stop rather than forward_stop and backward_stop for the roles since the outward and return directions of a spoon route are somewhat hard to tell apart. (Unless one stop in the loop is formally designated as the terminus where services routinely end.) You have to use forward_stop and backward_stop if you combine the two directions in one relation, otherwise the same-named stop in the two directions don't get combined on the line diagram. You're probably right (though I haven't tried plotting spoon lines yet), when the same stop is served twice, the tool needs that information. stop works well for single-direction relations. Maybe it would be best to use forward_stop and backward_stop for the stops which are served in both directions and stop for the stops in the loop. Then again, I'm wondering whether that's too much tagging for the renderer already. Couldn't a well-written renderer look at the stop names and deduct from these the fact that the stop is the same? Or can you think of any case in which that wouldn't work? I think if you use two relations, one for each direction, it combines them regardless of role (and even if there's no role). I did a lot of experimenting to get a simple, one-relation-per-direction line to render correctly. If I remember that correctly, the stop role is required (forward_stop, backward_stop or platform will also work). The tags on the members also seem to matter (e.g. amenity=bus_station, even with the correct role, does not get rendered.) Michael ___ Talk-transit mailing list Talk-transit@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-transit
Re: [Talk-transit] Summary of Public Transport Proposal Criticism - a real example from Zürich
On Sun, Feb 6, 2011 at 11:23 PM, Michael von Glasow mich...@vonglasow.com wrote: I did a lot of experimenting to get a simple, one-relation-per-direction line to render correctly. If I remember that correctly, the stop role is required (forward_stop, backward_stop or platform will also work). The tags on the members also seem to matter (e.g. amenity=bus_station, even with the correct role, does not get rendered.) http://www.openstreetmap.org/browse/relation/34631 doesn't have roles on the nodes (and it's one of the two relations used for the working example on http://78.46.81.38/public_transport.html ). ___ Talk-transit mailing list Talk-transit@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-transit
Re: [Talk-transit] Summary of Public Transport Proposal Criticism - a real example from Zürich
On 02/07/2011 12:23 AM, Michael von Glasow wrote: On 02/05/2011 06:09 PM, Richard Mann wrote: On Sat, Feb 5, 2011 at 12:32 AM, Michael von Glasow mich...@vonglasow.com wrote: if I may just comment on the relation: I would also use stop rather than forward_stop and backward_stop for the roles since the outward and return directions of a spoon route are somewhat hard to tell apart. (Unless one stop in the loop is formally designated as the terminus where services routinely end.) You have to use forward_stop and backward_stop if you combine the two directions in one relation, otherwise the same-named stop in the two directions don't get combined on the line diagram. You're probably right (though I haven't tried plotting spoon lines yet), when the same stop is served twice, the tool needs that information. stop works well for single-direction relations. Maybe it would be best to use forward_stop and backward_stop for the stops which are served in both directions and stop for the stops in the loop. I did not play around with actual renderers, but in theory the renderer should be able to get the diagram out of the order of the stops, regardless of the role. If one stop is twice in the route relation it should be obvious that it has to be some kind of loop. So in theory forward_stop and backward_stop can be replaced by the role stop. Or did I miss something? Teddych ___ Talk-transit mailing list Talk-transit@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-transit
