On Tue, 17 Nov 2009, James Ewen wrote:
We as the OSM community have chosen to accept the restrictions in
order to be able to import HUGE amounts of data, but it leaves us with
a quandary... how much modification of the imported data needs to
happen BEFORE the attribution can be REMOVED?
When
Hi James,
I feel that my answer leaved you with some (bad?) impression. Let me try to
clarify.
About replacing ways:
I was just trying to remember everyone that
- Common GPS devices produce tracks that have errors on it,
- I would replace a way only when I'm sure mine is better,
- The more I
Hi James,
(Thanks Daniel for the details)
I think we need to fix up the wiki so that the page on Canada Importing
Data (from all sources) is more clear (or maybe something bold at the top
of the page?). That hasn't been done yet. Unfortunately.
The idea for imports (of all types) is that the
On Mon, Nov 16, 2009 at 9:47 AM, Bégin, Daniel
daniel.be...@rncan-nrcan.gc.ca wrote:
1- replacing ways
I don't know the accuracy of a Blackberry but using a garmin
gpsmap 60csx (waas on), I sometime get a 10 meters offset
between tracks for the same way!
I can not speak to the accuracy of
Multiple approximations can often be very accurate when averaged. We
had an NMR machine on the 1st floor ( UK so twelve feet from the
ground) that was fine until they built a four lane highway in the air
outside. Lorries carrying steel do have cause problems to sensitive
magnets. However we
With averaging, if the random errors dominate the systematic errors, you
will in fact have a better idea where the road is. IIRC, during the course
of several hours ionospheric delays would cause systematic errors, but if
you instead drive/ride the same road on different days, it's going to be
Okay, I need some advise...
I drove a nice little twisty back road today, and captured it with my
Blackberry. I have the trace uploaded to OSM, and have looked at it in
relation to the GeoBase way.
GeoBase Way
http://www.openstreetmap.org/browse/way/31847379
GPS Track
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