On Tue, 28 Jul 2009, Roy Wallace wrote: > On Tue, Jul 28, 2009 at 10:10 AM, Stephen Hope<slh...@gmail.com> wrote: > > No, you're wrong here. Maxheight is an element of the way that goes > > under the bridge. It is caused by the bridge, but it is not part of > > the bridge. > > You're saying that the clearance under a bridge is not an attribute of > the bridge? I'm not at all convinced of that. But it is subjective, so > we may have to agree to disagree. > > > It is the road under the bridge that has the limitation, > > not the bridge. Divided roads often have different max heights on each > > side, but it is one level bridge over the top. >
snip we're arguing about matters regarding the logic of choices (as usual) then the logic of the name applied to the choice, which gets into philosophical arguments which remind me of Plato. http://en.wikipedia.org/wiki/Plato The problem is that at a time in the past a decision was made (Principle A) whose logic is now questioned. A lot has been uploaded onto the server using "Principle A", which will have to be reworked if "Principle B" succeeds "Principle A". So regardless of the logic, people will support "Principle A" because of the work involved in change. Just look at the work involved by the API change from 0.5 to 0.6 To return to the bridge the following attributes of the bridge and the road underneath it all need to be considered Height of bridge Height above sea level of the bridge Max height of the arch of the bridge above the roadway Max height of a vehicle which can drive under the bridge, which if the bridge is an arch must be less than the max height of the arch Max height of a vehicle which the engineer said was permitted to drive under the bridge so now I have 5 "height" measures some of which belong to the road and some to the bridge, and some to both. then we need unambiguous tags to refer to these 5 concepts and translations of them all. :-) _______________________________________________ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au