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I have the following layers in QGIS:

  • a polygon layer made up of all the zip-code areas in Germany
  • a layer displaying all the electricity grid nodes in the country.

In a previous step, I created a distance matrix to connect all zip-codes (or their centroids to be more precise) to their closest grid node.

Is there a way to combine all those polygons belonging to a single grid node (nearest point in the distance matrix) into one?

The result would be the area every single grid node is covering.

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    You already did most of the work. Just ensure to assign a unique attribute of the closest node to the polygons. Then dissolve or merge them by this attribute.
    – MrXsquared
    Apr 10 at 9:38
  • No idea I was so close to it already, did work wonderfully, thanks
    – Titan
    Apr 10 at 18:57

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