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<TITLE>RE: [OSM-talk] Stupid Josm question</TITLE>
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<P><FONT SIZE=2>But isn't that just going to produce raw tracks, (yellow data points) rather than finished roads? I want JOSM to stitch together the data points and produce a seamless sequence of segments... which it does internally, but, unless I'm misunderstanding, which I probably am, doesn't upload back to OSM.<BR>
<BR>
<BR>
-----Original Message-----<BR>
From: talk-bounces@openstreetmap.org on behalf of Gabriel Ebner<BR>
Sent: Sat 7/1/2006 9:32 PM<BR>
To: talk@openstreetmap.org<BR>
Subject: Re: [OSM-talk] Stupid Josm question<BR>
<BR>
On Sat, Jul 01, 2006 at 09:12:41PM +0100, Barnett, Phillip wrote:<BR>
> I'm obviously missing something obvious here, but given that my GPS tracks,<BR>
> loaded into josm and with the 'Draw lines between raw GPS points' option,<BR>
> produces beautiful looking roads - why am I then painstakingly adding nodes<BR>
> and segments in an attempt to make an approximation of those automatically<BR>
> generated by josm? Yes, there will be patches that require cleaning up, but<BR>
> in the main, a lot of the groundwork could already be done if I could just<BR>
> get josm to upload the raw gps tracks as finished roads. The conversion into<BR>
> ways would still need doing manually, but the tracing of tracks is hugely<BR>
> labour intensive, particularly if you're trying for accuracy<BR>
<BR>
Right click on the gps data layer, `Convert to data layer'. The resulting<BR>
nodes however will have 'ele' and 'time' tags, and don't forget to remove the<BR>
waypoints before uploading.<BR>
<BR>
> (btw, is approx 50 nodes for a 2 km stretch of minor country lane a bit<BR>
> excessive, or what you need for accurate map making, as I think it is<BR>
> ....?)<BR>
<BR>
That's just 1 node every 40 meters, not that much if the road is curvy. I<BR>
don't think that throwing away nodes for the sake of compactness is worth it,<BR>
that can be done ad hoc if that should be necessary, it's much more difficult<BR>
the other way. So better leave them in and try to make it look good (round<BR>
curves).<BR>
<BR>
Gabriel.<BR>
<BR>
</FONT>
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