[Qgis-user] Overlapping

[chris hermansen]

Michael and list

On Fri, Feb 11, 2022 at 8:49 AM Michael Williamson <
michael at michaelandjane.org.uk> wrote:

> I am sure this is easy but I can’t work out which facility to use
>
>
>
> I have two layers. Layer A is made up of some large polygons while Layer B
> is made up of smaller polygons. The Polygons in Layer A overlap one or more
> of the polygons in layer B. In most cases the overlap is 100% but there are
> a few cases where the overlap is less than that.
>
>
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> Layer B contains population and other data as numerical attributes and I
> want to populate corresponding attributes in layer A with the weighted
> total of the attributes in layer B depending on the amount of overlap.
>
>
>
> I have found various tools but I cannot work out which one to use. The
> ones I have found seem to do part of the job but not all of it.
>
>
>
>
> Probably you want

Vector > Geoprocessing Tools > Intersection

That will give you a new layer C with the geometric intersections of your
Layer A and Layer B.  The attribute table for Layer C will contain the
attributes of both A and B.


-- 
Chris Hermansen · clhermansen "at" gmail "dot" com

C'est ma façon de parler.
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