[Openstreetmap] data explosion
steve at fractalus.com
Wed Jul 6 09:29:21 BST 2005
* @ 06/07/05 01:18:13 AM lars at aronsson.se wrote:
> SteveC wrote:
> > With much thanks to Saul we now have an arrangement to get lots of gps
> > tracks from ecourier. I successfully imported last weeks track of
> > 300,000 points in and around london and its up for viewing.
> That's great news! Will the source data files be available for
> download? Can they be used outside of OSM?
Yes, downloading gpx's is a planned feature.
> > These links show their data overlapping with tracks we've made:
> > http://www.openstreetmap.org/tmp/screen.jpg
> Note how sparse the data are. Just one or two dots per block.
> Seems they are using less than one-sample-per-second. Just
They are once a second. Believe it or not, the screenie includes part of
a motorway (I think I can call the A/M4 Westway that).
> looking at the dots (and not the straight lines between adjacent
> dots), it will be very hard to determine where the roads are. This
It isn't hard to determine if you know the place! :-)
> How many hours of driving have we recorded?
I don't know. You could extract things via xmlrpc and find out, or wait
until I do some kind of database dump.
SteveC steve at fractalus.com http://www.fractalus.com/steve/
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