I've been working on a draft to deal with this question. http://wiki.openstreetmap.org/wiki/Proposed_features/directional
I haven't moved it to RFC yet since I want to polish it a bit more, but a couple of things to note. - Currently every waterway is equivalent to directional=yes. If it's been drawn in the opposite direction, it's been drawn incorrectly. - I prefer directional=* over flow=*. Flow could be confused with the quantity of water, whereas the proposal is concerned with the direction only. An intermittent stream on the side of a steep hill has minimal flow but is definitely directional. - The rendering rules to implement this are pretty easy to write > -----Original Message----- > From: Nathan Edgars II [mailto:nerou...@gmail.com] > Sent: Thursday, March 31, 2011 9:44 AM > To: Tag discussion, strategy and related tools > Subject: [Tagging] Any support for a flow tag? > > I'm wondering if there would be any support for a > flow=forward/backward/etc. tag for waterways. This would make the flow > direction explicit, and would provide a machine-readable way to tag > unknown or abnormal flow. > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > http://lists.openstreetmap.org/listinfo/tagging _______________________________________________ Tagging mailing list Tagging@openstreetmap.org http://lists.openstreetmap.org/listinfo/tagging
