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In QGIS, I have a point-layer with a column named type, which contains around 10 different pipe-seperated possible values (for example A|B|D|E, A|B, B|C|Eor B|C and so on, like in the example-image) (the values represent different tracks and signs of mammal-species).

For each different value I want a defined symbol to be shown, but without any gaps between.

I have managed to build a symbology with seperate symbol-levels with different fixed offsets for each value, wich sizes are set feature-driven with expressions like

CASE
WHEN regexp_matches ("type", 'A')
THEN 5
ELSE 0
END

This gives me desired symbols, but with a fixed offset for each symbol, which leads to gaps between them whenever a value is missing (for example if the type column says A|C, there is a gap between the symbols A and C, because the value B is not present).

enter image description here

Despite being quite complicated, this approach doesn't give me the wanted gap-free symbology... I have looked up the thread Labelling features by multiple attributes in QGIS, but this approach needs a separate column for each possible value, which in my case would need a bit of pre-formatting.

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    Using the answer that you have linked, you can compute the offset by counting the number of | before the icon/class being rendered
    – JGH
    Commented Mar 14, 2022 at 12:41
  • ok, that sounds like a good approach... How exactly would the syntax look like?
    – Bjoern
    Commented Mar 15, 2022 at 7:20

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