[Openstreetmap] Re: ecourier.co.uk GPS data mine
matt at matt-amos.uklinux.net
Wed Jun 29 19:33:29 BST 2005
On Wednesday 29 June 2005 14:49, Tom Carden wrote:
> "Petter Reinholdtsen" <pere at hungry.com> wrote:
> > Is that valid with GPX? I believe gpx2shp is sick when no
> > timestamp is present.
> It would also render many of our ideas for automatic feature
> extraction pretty much impossible.
GPX requires that the points be correctly ordered, which should be
good enough for feature extraction. there is a good reason to strip
or alter the timestamps anyway, as they could be used to identify
patterns of movement. its always good to maintain a healthy level of
paranoia, especially when dealing with other people's data ;-)
> I remember hearing about a driving enthusiast who was convicted of
> speeding using his own video tape as evidence - is GPS data
> admissible in the same way? Hopefully it's accurate enough to
> convict someone if it's accurate enough for mapping!
seems to agree, but i don't think its been ruled upon in this
> Perhaps it would be easier to keep the owner of the GPS trail
> anonymous? If we don't know, then we can't tell.
this is probably a better idea. the following seems to put us in the
clear (as we're not the employer or owner of any of the vehicles):
a guess could probably be made if the GPS unit is taking readings at
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