[Qgis-user] Difference

[Siki Zoltan]

Dear Gayani,

there is a Venn diagramm on wikipedia about symmetrical difference, see
http://en.wikipedia.org/wiki/Symmetric_difference

Symmetrical difference of two sets contains the union of the two sets 
except the intersection of the two sets.
The difference of two sets contains the elements of the first set except 
those belonging to the second set too.

Regards
Zoltan

On Sat, 21 Jan 2012, gayani wrote:

> Hi,
> What is the difference between "Difference" and "Symetrical difference" in
> QGIS Vector --> Geoprocessing tools
>
> Thank you
> Gayani
>
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