In my neck of the woods, the current imagery displayed by Google Maps
and Google Earth imagery are shifted about 10-20m to the east. You can
see this when you compare the Google Maps streets data to the satellite
view (see the following URL). I have noticed the same thing when
uploading GPS data that I collected on the local trails that are visible
in the imagery.
So its possible that is nothing wrong with your WMS layers, but it is
that the Google Maps imagery in your area is not precisely registered...
Example:
http://maps.google.com/maps?f=q&hl=en&q=ann+arbor,+mi&ie=UTF8&t=h&om=1&ll=42.307451,-83.739821&spn=0.005094,0.009656&z=17
- Tyler
Cranio wrote:
Yes I do use that projection. I don't know if my WMS layers (that I
superimpose on Google) are wrong,
altough they shouldn't (they come from governative sources).
Anyway, the WMS are *not* in S-Mercator, but I think they're reprojected
correctly.
Christopher Schmidt-4 wrote:
On Tue, Jan 15, 2008 at 01:42:29AM -0800, Cranio wrote:
Hi.
another question. My google layer, when greatly zoomed, appears to be
lightly shifted in
respect to the WMS ones, a shift of about 10-20m in Latitude and 5-10m in
Longitude.
Is there a way to put an offset somewhere to achieve a perfect
alignment?
No.
Are you using Spherical Mercator? There shouldn't be any shift...
Regards,
--
Christopher Schmidt
MetaCarta
_______________________________________________
Users mailing list
[email protected]
http://openlayers.org/mailman/listinfo/users
--
Tyler A. Erickson, Ph.D.
Research Scientist
Michigan Tech Research Institute
3600 Green Court, Suite 100
Ann Arbor, MI 48105
[EMAIL PROTECTED]
www.mtri.org
www.michiganview.org
_______________________________________________
Users mailing list
[email protected]
http://openlayers.org/mailman/listinfo/users
