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I want to count the amount of buildings within my neighbourhoods. The dissolve function doesn't work here because the buildings are not intersecting. Does someone have a tip on how I can do this?

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Step 1: Make sure your buildings have an ID.

Step 2: Join attributes by location in order to get the name/ID of your neighbourhoods to your buildings.

Step 3: Run count("building ID",group_by:="neighbourhood ID") in the field calculator on the joined layer. Column names have to be replaced by the one your data has.

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  • How can I quickly give the buildings an ID? The building layer does not have information yet in which neighbourhood it is in.
    – Marlot Rijkers
    Commented Aug 5, 2022 at 9:24
  • docs.qgis.org/3.22/en/docs/user_manual/expressions/…
    – Erik
    Commented Aug 5, 2022 at 9:53
  • Your building layer looks like it comes from a cadastral dataset or from OpenStreetMap so I would imagine that each feature already has a unique identifier. Check the attribute table.
    – Matt
    Commented Aug 5, 2022 at 12:56

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