On Thu, Sep 24, 2009 at 8:02 PM, John Smith <deltafoxtrot...@gmail.com> wrote: > >> just for fun I've printed out a walking-papers page and am going to see if it >> is any use for tagging shops in a suburban strip shopping strip >> and then how will I define the survey= > > source=survey > survey=observation
I don't think survey=observation means anything. source=survey always implies survey=observation - that is, if you visit someplace and don't make any *observations*, you aren't doing mapping. The source of an element, I think, comes from two places: source of lat/long (e.g. the location of the road) - how about source:location=* - and source of tag values (e.g. the name of the road) - already defined as source:<key>=*. It may be useful to tag these separately. For the walking-papers example, for each new shop node where shop=* and name=* is entered, presumably you would have source:location=walking-papers; source:name=survey; source:shop=survey. This implies that you used the walking-papers only to decide where to locate the new shop nodes. If you used a GPS and added a waymark on the ground, or used photo- or audio-mapping synchronised to a gpx track, you would instead use source:location=survey; survey=gps, etc. If you named the shop from memory, rather than on-the-ground survey, you'd use source:name=knowledge. If you added a shop node *in a particular location* from memory (e.g. you remember it's on this particular corner), you'd use source:location=knowledge. Another example: If going out with a GPS and filling in noname roads, where the locations are already traced from, say yahoo, I think you would only need to add source:name=survey. In this instance I don't think your GPS has anything to do with adding name=* to pre-mapped noname roads. And so on and so forth. That was a bit long winded. In short, to be thorough, use source:location=* and source:<key>=*. As long as "location" is never used as a key name (I can't see why it would be), it'll work :) _______________________________________________ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
