[talk-au] Hi all ...

[Darrin Smith]

On Wed, 17 Jun 2009 05:30:43 -0700 (PDT)
Delta Foxtrot <delta_foxtrot at yahoo.com> wrote:

> > I don't have a problem with uploading gps traces to osm but
> > I can see no benifit if I'm just going to edit them in josm
> > anyway and given that they are all one second data that's a
> > lot of data to put on the osm servers when not really
> > necessary.
> 
> The benefit I see is from law of averages, to a point, if you get 50
> people tracing out the same ways, you average the points and neglect
> any spurious data and you should have a very accurate plotting.

Have to agree about 200% with Delta on this one, I've seen way too many
cases of people who have obviously used their 1 gpx track to move and
existing surveyed way to follow it when if they'd used theirs and the
20+ traces that were available on osm (and uploaded theirs so the next
person would have 21+ to use) they'd realise their track was a off that
day. I've also seen too many cases myself where I do a first trace
down a road to get a path then put together 3 or 4 over a period of
time and realise the first trace was off. 

The moral of the story is never ever ever use a GPS trace in isolation
if there's any others available in the area, and make you traces
available so the next person working in the area can benifit from your
input also.

-- 

=b