[Qgis-user] Idea's for runtime cleanup of giant rule base qml style?

Richard Duivenvoorde rdmailings at duif.net
Wed Nov 12 08:47:14 PST 2025


Hi all,

We have a (generated) qml style with 1500 rules (all different fill images!).

Using that style is a PITA, slowing QGIS down very much.

After the style is loaded, around 90% of the style rules are not used (I think).

So my idea was to either clean up the rules after the loading (which already takes a long time).
OR use some python code to first find the distinct values (styles are simple: just one code), and then load the qml and only apply/select those rules needed...
OR something like: use categorical styling but take the symbols from this qml ???

Anybod a clever idea for this?
Or maybe some plugin?

Regards,

Richard Duivenvoorde


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