[Qgis-user] GEOPROCESSING: UNION of more polygons of different layers

[Andreas Neumann]

Hi,

Isnt' merge something else than union? As far as I know, merge only 
copies the content of one layer into the other, whereas union really 
unites overlapping geometry and creates new features. You'd have to 
define how it handles the attributes.

Andreas

On 21.12.2015 11:49, Lewis Villierme wrote:
> Hi,
>
> There's a tool called in vector/Data management/Merges Multiples layer to one
>
> you can specify a folder in which you have all your shapefile to merge.
>
> regards.
>
> 2015-12-21 10:04 GMT+00:00 Azzurra Lentini <azzurralentini at gmail.com>:
>> Dear all,
>> is it possible in Qgis to do the union of more polygons of differents layers
>> (so from more input layers to have one output layer as I can do in arcgis)?
>>
>> In vector --> geoprocess --> union
>> is the union of only 2 different layers but is not possible a union a more
>> of 2 layers.
>>
>> Thanks, Azzurra
>>
>> --
>> Dr. Hydrogeologist
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