[OSM-newbies] new to OSM editing - advice on coping with gpx / POTLATCH offset
thomas.meller at gmx.net
Fri Jan 16 18:02:12 GMT 2009
I tend to doing the least possible. GPS data are a bit tricky.
If I find that a way's character is not what someone mapped I edit the OSM data or redo the whole way.
That depends on how much work that might be.
In Potlatch, it can be better to delete the way and do it from scratch.
So an undelete is possible and I don't have to respect the other's effort.
All in all, my own measurements can be wrong as well.
Better have a look at other satelite fotos, your own experience or topographic maps and then judge by your confidence.
-------- Original-Nachricht --------
> Datum: Thu, 15 Jan 2009 00:47:53 +0000 (UTC)
> Von: JW <jameswillmer at googlemail.com>
> An: newbies at openstreetmap.org
> Betreff: [OSM-newbies] new to OSM editing - advice on coping with gpx / POTLATCH offset
> Hi all
> I started small by adding some .gpx data
> (Blackberry curve / bbtracker.org app)
> to local maps in areas which i know well.
> This area has been mapped
> previously by someone using potlatch and the
> yahoo available satellite photos (UK)
> It turns out that there seems to be an
> offset between potlatch locations and
> .gpx data i record - maybe 5 to 10m or so.
> There are a few courses of action
> 1) trust my phone gps .gpx data is correct
> and change all potlatch locations as
> i can..... this is not practical for
> a small edit added to a large mapped area
> 2) don't worry about it this is
> within normal gps errors ..... just "interpret"
> where the footpath is and add it beside the potlatch road.
> 3) something else?
> What do others do?
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