I have two layers
- "Suburb_Type", that has more than 1000 suburbs in shapes and is styled with categorisation rule. (columns: 'suburb_code', 'geometry', 'category_variable')
- "Suburbs_in_Study", with identical geometry data to Suburb_Type but without the column 'category_variable'.
I want to apply a rule-based style on "Suburb in Study", so that it will highlight (draw thick outlines) those that are listed in another layer, "Study_List" (CSV, no geometry) using 'suburb_code'. (columns: 'suburb_code'; only a handful of suburbs are listed).
How do I apply a rule-based style using expression editor? I've seen tips that utilise geometry intersection. However, since my list does not have geometry but is a simple CSV list, I'm unsure how I'd go about it. The idea is that Study_List.csv will be updated frequently.