Let me try to clarify what I'm saying again. Gerd writes: If we follow Daves idea one might create a relation combining a few things that have the same tag, e.g. all building=residential in a town, name it something like "residential buildings" and finally remove the tags from those buildings. I hope nobody thinks this would be a good idea.
I m would never do anything like that. If you can follow my reasoning, you'll see that for the example you're using my argument would say that those ways that comprise the buildings would stay on those ways and not on the relation. That's' because the object "building" requires a way that is tagged specifically as a building and as such, according to my reasoning, properly belongs on the way and only on the way. If the buildings are part of a group that is an entity, like a university for example, then create a relation and place its name there along with whatever other tags apply to the university as a whole; owner, website, etc., and then add the building ways to it. The tags for the buildings, each with the tags that apply to it, be it office, dormitory, whatever, are placed on the way only and the buildings render as they do if even if they were not part of a relation. One must look a little closer to determine that they're part of something larger. Gerd also said: "I think Dave wants to use relations as a general method to remove redundancy. The idea is not new and I think there similar discussions before. I think one of the arguments against it was that many editors are not able to handle relations good enough, I fear this is still true. I think the same problem is on the consumer side' Not at all. Using relations properly could indeed reduce redundancy, and that was the goal of my editing of the Alaska pipeline, but my aim for starting this thread was to discuss relations and learn to use them better. Also, Gert mentioned rendering. Let me repeat what I said earlier in this thread about rendering. Rendering, while it's an important concern for all of us, really shouldn't be a part of this discussion. We're trying to learn how to best use a very powerful method of mapping a complex world. Whether or not something shows up on the map (is rendered) is not what I'm talking about here. On Sun, Nov 4, 2018 at 4:15 PM Gerd Petermann < gpetermann_muenc...@hotmail.com> wrote: > If we follow Daves idea one might create a relation combining a few things > that have the same tag, e.g. all building=residential in a town, name it > something like "residential buildings" and finally remove the tags from > those buildings. I hope nobody thinks this would be a good idea. > > Reg. the TAP pipeline (I was the complaining user that Dave mentioned): I > did not even know that something like a route=pipeline exists before I saw > that Dave removed the tags from the member way. The same seems to be true > for JOSM developers because the way is no longer rendered as a pipeline in > JOSM. > Well, that might be something that should be fixed in JOSM. > > I think Dave wants to use relations as a general method to remove > redundancy. The idea is not new and I think there similar discussions > before. I think one of the arguments against it was that many editors are > not able to handle relations good enough, I fear this is still true. I > think > the same problem is on the consumer side: > A renderer or routing app has to know which types of relations might > contain > information that has to be transferred to the members, it cannot do that > with a simple rule like "if a way is the member of a relation, copy all > attributes of the relation to the way". Just think about cases where a > highway is member of several route relations. > So, if one starts to remove tags from members because the relation repeats > the tag he has to make sure that this is a well established method. Not > sure > if this is the case for pipelines? > > > > > -- > Sent from: http://gis.19327.n8.nabble.com/Tagging-f5258744.html > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging > -- Dave Swarthout Homer, Alaska Chiang Mai, Thailand Travel Blog at http://dswarthout.blogspot.com
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