[OSM-dev] Import a huge amount of GPS data

[Martin Koppenhoefer]

2013/5/23 Jingmin Chen <jingmin.chen at epfl.ch>

> Dear all,
>
> I currently have access to 2 years, 20,000 taxi vehicles GPS trace (30sec
> interval) of a large city in China. The OSM data quality of that city is
> really bad. But uploading the raw GPS trace might have legal issues. Is it
> possible to process the data  to roads before I upload to OSM? Thank you
> very much for any suggestion.
>



Did you have a look at some examples whether this is useful data (precision
wise and because of the relatively low frequency)? I am not aware of the
average traffic speed in this town, but in 30 seconds in many cities you
could move quite "far". Another potential issue, which mappers would have
to keep in mind when deriving data from these traces, is that taxis often
have special traffic rules, so it is not given that any car could take the
same route than a taxi could. And lastly, there might be legal issues
(AFAIK mapping or registering GPS-traces is forbidden in China, at least if
you intend to publish them in a foreign country, not sure whether you are
operating from inside China or from abroad).

cheers,
Martin
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/dev/attachments/20130523/1dc811de/attachment.html>