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I have a point layer in QGIS, which I want to filter by attribute values of a specific attribute column. For each unique attribute value, a centroid should be calculated from the respective features. This results in one centroid for each set of features containing a unique attribute value.

Example: In the attribute column 'names', I have 10 features named 'aaa', 20 features named 'bbb', and so on. Now I want to create a centroid of the respective 10 'aaa' features, another centroid of the respective 20 'bbb' features, etc.

Anyone has some hints on how to do this?

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  • 1
    To be sure of your problem, do you want create centroids of the features grouped by attribute?
    – Val P
    Feb 25 '20 at 14:51
  • Yes, grouped by attribute is another good description. The answer below exactly did what I needed!
    – LeonardH
    Feb 25 '20 at 15:04
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Please have a look at the mean coordinates tool. This should do exactly what you need.

enter image description here

Hand the tool a layer, maybe add a weighting value, and (this is important for you) tell the tool, which column contains your group IDs.

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  • This worked perfectly! Exactly what I was looking for. Thank you so much!
    – LeonardH
    Feb 25 '20 at 15:04

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