On Tue, Jul 28, 2009 at 5:22 AM, Aleksejs Mjaliksli...@keeper.lv wrote:
Does OSM invalidates GPS data after some time? Otherwise, roads
continuously changes and after we will have a big cloud of points that
don't make any sense.
No, it doesn't. GPX tracks stay where they are forever and
On Tue, Jul 28, 2009 at 09:21, Ævar Arnfjörð Bjarmasonava...@gmail.com wrote:
Does OSM invalidates GPS data after some time? Otherwise, roads
continuously changes and after we will have a big cloud of points that
don't make any sense.
No, it doesn't. GPX tracks stay where they are forever and
Simone Cortesi wrote:
On Tue, Jul 28, 2009 at 09:21, Ævar Arnfjörð Bjarmasonava...@gmail.com
wrote:
Does OSM invalidates GPS data after some time? Otherwise, roads
continuously changes and after we will have a big cloud of points that
don't make any sense.
No, it doesn't. GPX tracks stay
On Tue, 28 Jul 2009, Simone Cortesi wrote:
Does OSM invalidates GPS data after some time? Otherwise, roads
continuously changes and after we will have a big cloud of points that
don't make any sense.
No, it doesn't. GPX tracks stay where they are forever and continue
being served by
--- On Tue, 28/7/09, Maarten Deen md...@xs4all.nl wrote:
But there is no way to determine if a particular GPS track
is outdated. Sure,
you can look at the map and say I don't see a physical
road for this track,
but how would you identify GPS points of a track that is
invalid? Especialy
--- On Tue, 28/7/09, Liz ed...@billiau.net wrote:
please , don't drop data
for many areas we are lucky to have one trace and it may be
a year or more
before another mapper goes back there
consider having access to older data in separate sets if
there is concern
about using old gps
--- On Tue, 28/7/09, Simone Cortesi sim...@cortesi.com wrote:
GPS are becoming more precise. older tracks are, on a
general basis,
You can't make assumptions of the quality of the data based simply on how
recently it was added, someone might be using an old piece of GPS kit they were
given
This doesn't make sense to me.
At least there should be a timestamp of gpx-files which
tells us when they've been uploaded so that one could filter them
a la show me gpx-files not older than 3 years !
Roman
On Tue, Jul 28, 2009 at 5:22 AM, Aleksejs Mjaliksli...@keeper.lv wrote:
Does OSM
On Tue, Jul 28, 2009 at 09:59, John Smithdelta_foxt...@yahoo.com wrote:
--- On Tue, 28/7/09, Simone Cortesi sim...@cortesi.com wrote:
GPS are becoming more precise. older tracks are, on a
general basis,
You can't make assumptions of the quality of the data based simply on how
recently it
On Tue, Jul 28, 2009 at 09:58, John Smithdelta_foxt...@yahoo.com wrote:
consider having access to older data in separate sets if
there is concern
about using old gps tracks, just don't drop any because it
is old (like some
of us)
Maybe the best option is to let people stipulate how many
Hello !
One think I think it can be useful is a tool for editing all our old trace :
- easy to download all our trace
- easy to remove unprecise segment (in some old my trace I have some
segment who is 50 m wrong !)
- easy to simplify them
- easy to re-upload modified trace !
I think that a tool
--- On Tue, 28/7/09, Simone Cortesi sim...@cortesi.com wrote:
I'm talking in the long run. Not something to be done in
the coming
moths. Still we are just 5 years old. And not many roads
did change
shape in this short period of time.
Some areas have lots of road duplication construction
John Smith wrote:
--- On Tue, 28/7/09, Maarten Deen md...@xs4all.nl wrote:
But there is no way to determine if a particular GPS track
is outdated. Sure,
you can look at the map and say I don't see a physical
road for this track,
but how would you identify GPS points of a track that is
--- On Tue, 28/7/09, Maarten Deen md...@xs4all.nl wrote:
That is not indicative. A road could remain unchanged for
the last 100 years
or could have been demolished last year. What would be the
expiration time of
a track? And would you be prepared to lose correct GPS data
to do this?
Also
Sorry to break the threading,
Maybe it's an idea to allow users to specify an area where traces are outdated?
So when a junction is reconstructed a local user can place a bounding
box over that junction and all GPS points in that box are marked as
outdated (or deleted, or whatever). Maybe some
--- On Tue, 28/7/09, René Affourtit raffour...@gmail.com wrote:
Maybe it's an idea to allow users to specify an area where
traces are outdated?
So when a junction is reconstructed a local user can place
a bounding
box over that junction and all GPS points in that box are
marked as
Also, and I've already posted here about that a while ago, it would
really help if hdop, and eventually vdop, wasn't lost in the
anonymization process. This is an important data when tracing, but
unless you know who published the track and you can download the
source, you don't have access
Hello!
I am currently looking at GPS collected by OSM colleges here at Riga.
I see there is data about temporary bridge built during road works and
after de-mounted.
Does OSM invalidates GPS data after some time? Otherwise, roads
continuously changes and after we will have a big cloud of
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