[Qgis-user] Buffer with qgis : wgs84/mercator world?

[Marco Lechner - FOSSGIS e.V.]

HI image,

the "meters" in Pseudo Mecator or Google Mercator are not exact meters
in reality. Use a better metric projected CRS available for your region
of work (where is your data located). You could use the UTM (e.g. 32632
if in Germany) to get far better results.

Marco

P.S. in Google Mercator the "meters" only next to the equator are
approximately meters

Am 10.05.2013 13:09, schrieb image:
> Thank you. 
>
> I just tried a test to generate a buffer 20 meters from my linear shp(with
> pseudo mercator). It works. But when i measure, the buffer is not to 20
> meters but 12/14 meters. 
>
> Could you just make a quick test on your side please? 
>
> Via the interface called Buffer i have entered those parameters:
>
> Segments for approximation (by default) : 5
> Buffer distance : 20
>
> Indeed i'm working on such a small scale and i don't care about small
> distortions.
>
> Could you throw light for me? 
>
> Thanks.
>
>
>
> --
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