[Qgis-user] Copernicus - Imperviousness Density

[chris hermansen]

Berna and list,

On Tue, Oct 14, 2025, 12:14 Barna Gábor via QGIS-User <
qgis-user at lists.osgeo.org> wrote:

> Hello!
>
> I am Gábor Barna from Hungary, I study to become an Environmental
> Engineer.
> I would like to ask for your help. I am trying to get an average data from
> this Data Viewer - WEkEO
> <https://wekeo.copernicus.eu/data?view=viewer&objects=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%3D%3D&layers=eyJjMCI6eyJpZCI6ImMwIiwib3BlbkRyYXdlck5hbWUiOiJzdWJzZXR0ZXIiLCJyZXBsYWNlbWVudENvbG9yTWFwSWQiOm51bGwsInZhbHVlTWluIjpudWxsLCJ2YWx1ZU1heCI6bnVsbCwibGF5ZXJJZCI6IkVPOkVFQTpEQVQ6SFJMOklNUC9fX0RFRkFVTFRfXy9pbXBlcnZpb3VzbmVzc0RlbnNpdHkiLCJ6SW5kZXgiOjQwLCJpc0luaXRpYWwiOnRydWUsImlzVmlld2FibGUiOnRydWUsInRpbWUiOjE2MDk0NTkyMDAwMDAsImlzUmVwbGFjaW5nIjpmYWxzZX19&center=18.88457996780484%2C47.39246129975419&zoom=20.93> data
> for my thesis (please, find my downloaded file here:
> https://we.tl/t-LUKlZ4TKWI). The data is Imperviousness Density and for
> Érd city (Hungary) for exact match I downloaded a KML file from here:
> https://data2.openstreetmap.hu/hatarok/hatarok.php?hatar=%C3%89rd (please,
> find attached)
>

The imperviousness data - are you using the point data itself?

So you are trying to do something with the point data that falls within the
Érd city polygon?

>
> I tried to combine them in QGIS but I couldn't. Please, can you help me by
> sending the project file where it works or writing down exactly what should
> I do?
>

What do you mean by "combine them"?

Are you just trying to get a mean value for imperviousness by averaging all
the points that fall within the city?


> I only studied a bit this program, but it would be really great if I can
> use it.
>

There are lots of online tutorials and reference materials. You may find it
worthwhile to review some of them to find out what kinds of analysis you
can undertake with this sort of data.

Also you may wish to think about the underlying spatial distribution that
is being sampled with the point data and what kind of assumptions can
reasonably be made with regard to interpolating and similar kinds of
operations.

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

C'est ma façon de parler.
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