[OSM-talk] 68 GPS units donated to OSM

Chris Hill chillly809 at yahoo.co.uk
Sun Jan 18 16:58:12 GMT 2009

But to push the average sample rate for an area up to a useful level you will need about a 100 trips on the same road - easy near a depot or a big customer, not so elsewhere.  It might give a reasonable track in very slow-moving traffic.

Just uploading all the tracks to OSM and then looking at the combined download with JOSM will give you the average.  I think Potlatch joins the points together with a line which might be distracting when they are three minutes apart.

 cheers, Chris

----- Original Message ----
> From: Gisle Sælensminde <gsale at broadpark.no>
> To: Erik Söderström <erik at yi.se>
> Cc: osm <talk at openstreetmap.org>
> Sent: Sunday, 18 January, 2009 16:48:18
> Subject: Re: [OSM-talk] 68 GPS units donated to OSM
> >
> > My name is Erik Söderström and I live in Gothenburg, Sweden.
> > I'm fairly new to this project, but have quickly been drawn in due to my
> >   fascination of all things free.
> >
> > I work as an IT-admin at a logistics company (haulage). We currently
> > have six trucks that are GPS-enabled, and those send in data to our
> > servers (which I then compile and contribute). The problem is that the
> > data is sent 3 minutes apart so the tracks are in very low resolution.
> >
> These data can be useful if  drivers drive the road multiple times, as a
> logistics company surely does. Since these points has the same accuracy
> as loggers that log each second, and probably does not map the exact
> same spot each time it passes, it can over time be high enough
> resolution to map the road. It is not low resolution, just low sampling
> rate. Thus these data can still be valuable if collected over time. This
> will require some work on the dataset, but there should be people that
> can do this. I can help you with this.  One could for example collect
> all data, not by vehicle, but by area, so other people could use it for
> mapping. These data would be annonymized, so that one would not know
> anything of which driver drove where and when.
> Gisle Sælensminde
> (email - gsale - broadpark - no)
> _______________________________________________
> talk mailing list
> talk at openstreetmap.org
> http://lists.openstreetmap.org/listinfo/talk


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