I have zoning plans for a municipalities ( for example 5700 features in this one) and I have created a QGIS-style to make it look like the offical style.
There are 72 colours/patterns for the different zones (coarse version), and at least twice the number of zones in a more detailed style. Some of the zoning codes share the same patterns/colours as other codes.
All the codes are four digit so I tried to regex the zoning-code and categorised them like shown on the image below.
Running this style on this number of features takes some time every time I do anything in QGIS.
So the question i: I was wondering if nesting the zone-styles would help with performance, or if this would just end up using more (simple check vs regex for the category -> sub-category)