[Qgis-user] Qgis and Google

[Tim Sutton]

Hi

On Fri, Sep 9, 2011 at 9:19 AM, Ramon Andiñach <custard at westnet.com.au> wrote:
> Assuming that your project CRS is correct, then It's probably an interaction
> effect.
> The way it was explained to me is that the google bits are tiled images that
> are designed to be viewed at predetermined scales.
> QGIS will let you view them
> at scales other than this, and when that happens you get an offset.
> Usually when I first load up a google layer the offset is bad, but if I zoom
> out or in a bit it usually gets it's act together until I do something odd
> like zoom right in.

Also sometimes google imagery is just plain not georeferenced
accurately enough to match your vector overlays....

> BTW the OpenLayers
> Plugin is much better supported.
>
> -ramon.
> On 09/09/2011, at 14:44, "Starke Holger, Mag." <Starke at hagel.at> wrote:
>
> Hi all,
>
> I´ve a Problem with the Google Maps Layers.
>
> I added a Google Maps Layer using the "Google Layers" Plugin (Projection:
> EPSG:900913). Then I added an own Polygon-Layer (EPSG:31287) and enabled the
> "On the fly"-Transformation Option before. Both Layers are displayed, but
> there is an offset of about 20 meters. Is that due to inaccuracy of the
> transformation or is it a bug in QGIS?
>
> Holger
>
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>



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Tim Sutton - QGIS Project Steering Committee Member (Release  Manager)
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