2011/12/21 ce-test, qualified testing bv - Gert Gremmen <g.grem...@cetest.nl>: > I think it's relevant that node changes as suggested > should involve stand alone nodes only (such as POI). > Once they are part of a structure of say a building or a road, water > or any area, the nodes should be considered a "composition" rather > then 4 nodes
IMHO rights on this "composition" can also faint, e.g. years ago a (non-ct) mapper was drawing a rough street with nodes every 300 meters. Now those initial way has five times more nodes then it had in its initial version (most probably the initial way would also be split into different pieces now, due to details like speed limits, turn-restrictions, bus routes, lane-count, ...). I think there must also be a point where nothing from the initial way is actually contained in the current data (often these initial ways don't have much attributes, it is common in here to find ways which only have/had a highway-tag (the value is now often changed, so not even one tag is the same). If you assume that other tags (like the name) would also have been inserted by the following mappers you could extend this to ways which had a name (or some other frequent tag, for which a following mapper guarantees that he would have added it if it were missing). > While the underlying structure is a geographic fact, the choice > of place nodes and the number to represent the structure is > a creative work. +1, but where is the point that this structure is significantly changed? How many nodes do you have to move and insert/delete to be something different? What if someone takes a river, moves it aside and lets it become a track (deletes the river tags and sets highway-tag, changes name). Now he copies this way as a new way (new nodes and way) to the old position of the river and sets tags. Is the track-way now tainted because it consists of old nodes, while the river is OK because it was newly created? Admittedly a rare corner case, but IMHO one that shows that there is a point where there is no more original information in the following versions of a way. cheers, Martin _______________________________________________ legal-talk mailing list legal-talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/legal-talk
