The bing imagery is out.
As per here:
http://wiki.openstreetmap.org/wiki/Bing#Precision
you need to align the bing imagery to either gps traces or source=survey
or source=nearmap.
Nearmap guaranteed that their imagery was within one metre, although
there are some areas that are outside this.
Cheers
Ross
On 01/09/12 08:11, Russell Edwards wrote:
Hello -- brand new user here, please be patient :).
I am trying to improve OSM in my home town. I notice that many/most OSM
ways are approx 5-10 m west of where Bing has them.
Most either have nearmap or nothing as a source. There are no GPS tracks
to download. I could make some but they're usually in (random) error by
about the same amount anyway.
I tried to check against the coordinates given for a survey mark in
town, through http://services.land.vic.gov.au/maps/lassi.jsp (with
conversion to lat/lon with http://www.gracode.com/mapgrids.php ) ...
this also had the Bing map out by about 10 m... but southward!
Help! Three inconsistent systems - Bing, OSM and the survey mark. Which
if any should I trust at the 1-m level?
Is there a tool for averaging GPS tracks? There are roads I have run
along dozens of times with a GPS track for every run. Maybe with
averaging it could get to the 1m level of accuracy.
(Yeah yeah, don't sweat the small stuff... I just can't stand seeing
streets running through people's front gardens...)
Thanks in advance
Russell
_______________________________________________
Talk-au mailing list
Talk-au@openstreetmap.org
http://lists.openstreetmap.org/listinfo/talk-au
_______________________________________________
Talk-au mailing list
Talk-au@openstreetmap.org
http://lists.openstreetmap.org/listinfo/talk-au
