> From: Jo [mailto:winfi...@gmail.com] > Sent: Wednesday, May 29, 2013 10:42 PM > To: josm-dev > Subject: [josm-dev] Find superfluous nodes > > Hi, > > We got some data where there are extra nodes, which I'd like to get rid > of before integrating it into OSM.
Standard import cautions apply here of course, https://wiki.openstreetmap.org/wiki/Import/Guidelines, etc > The simplify function is too coarse for the purpose and doing it > manually gets tedious. Even with adjusting simplify-way.max-error? > Is there a way to determine that 3 nodes are on a straight line, or is > it possible to calculate the bearing (directional coefficient?) of the > line intersecting 2 points? If this is the same for two consecutive > lines, the node in between can be safely removed. (I'll check that it's > not part of an adjacent building first, of course). This should be equivalent to simplify with a max-error close to 0. It's worth noting that simplifying before converting to .osm format can speed up the conversion process if you're dealing with a lot of data and that when two ways share nodes for part of their length JOSM may not simplify that length. _______________________________________________ josm-dev mailing list josm-dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/josm-dev
