[OSM-dev] Feasibility of an 'in the field' mobile editing app?
igor.brejc at gmail.com
Sun Mar 9 08:52:11 GMT 2008
Nick Whitelegg wrote:
> Hello everyone,
> Have managed to got hold of a N95 for research purposes through work. One
> thing that maybe would be useful is an "in the field" editing application
> for the outdoors, where you walk, the inbuilt GPS on the phone records
> your track, then you choose a route type (footway, bridleway, road etc)
> and an appropriate way is created from your track. You repeat this for
> your whole walk then when you're finished (or even maybe in the field?)
> you upload the new way to OSM. To avoid the need for (expensive, I should
> imagine) downloads to the phone, functionality such as checking for
> duplicate nodes and ways is done server side: if not on the main OSM
> server, on a proxy server.
> I haven't had a great deal of experience in mobile development though, so
> do people think this is a feasible project?
Sounds nice, but there's one problem: creating OSM ways automatically
from GPS data (without user editing) is not a good idea, for several
- GPS (in)precission: it is a good practice to cover certain path
several times before actually creating a way
- Depending on your GPS tracking settings, you could end up with a lot
of unnecessary OSM nodes (while standing still, for example). This could
be fixed by some data cleaning SW, I suppose, but it should be taken
As far as I remember, JOSM by default does not support snapping to GPS
nodes exactly for these reasons.
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