Also, a free-hand drawing mode (e.g. press-down left mouse button and drag) in JOSM would go a long way towards faster tracing. Clicking to add one point at a time is pretty slow.
Michael. On Mon, Nov 02, 2009 at 01:18:46PM +0530, Shalabh (shalab...@gmail.com) wrote: > Hi Nop, thanks for your email. I take your point, it would be difficult to > delete and then we would be purely depending on the mapper's diligence. So > yeah, I think I would rather use the suggestions given by Dan than advocate > an auto track feature. > > Regards, > Shalabh > > On Mon, Nov 2, 2009 at 1:15 PM, Nop <ekkeh...@gmx.de> wrote: > > > > > Hi! > > > > Shalabh schrieb: > > > > Given my limited understanding of mapping and even more limited > >> understanding of computing, I think it would be better if JOSM assumed the > >> trails to be correct and drew nodes on it on its own. > >> > > > > This is possible combining several features. However, it is a bad idea, > > most ways added this way are in horrible state and need correction. > > > > - way too many nodes. The API does not return more than 50000 nodes in one > > request, so many tracks with 1500 nodes each quickly make it impossible to > > download a sizable area > > - the GPs is inaccurate. If you just stupidly add the track, all the > > mismeasurements are added to the DB. While drawing the way, you can smooth > > out the obvious zigzags of errors and deviations of known bad reception. > > Also, as the distance of nodes (usually 1m) is way smaller than the basic > > error of the GPS, it makes no sense to add this sort of misleading > > pseudo-accuracy > > - those ways are then unconnected to all other ways. It is very difficult > > and tedious to create the proper connections > > - most people who take this "easy way" don't connect and simplify the way > > properly, you will often find ways that are simply created over existing, > > manually edited versions of the same way. > > > > So in practice this doesn't work out. If you process your track properly, > > it is quite some work either way, but using the track directly encourages > > quick and sloppy adding of bad geometry. > > > > It has been suggested several times, that the possibility to do this > > indirectly be removed from JOSM altogether and having corrected many bad > > direct uploads I am rather in favour of this. > > > > bye > > Nop > > > _______________________________________________ > talk mailing list > talk@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
