Computes CPUE as the ratio of total catch to total fishing hours per H3
cell for each of the top-N species:
CPUE_h = sum(catch_kg for trips visiting h) / sum(fishing_hours in h).
Robust with sparse data; always produces a result.
Arguments
- trips
Combined effort + catch tibble from
join_effort_catch().- top_n
Integer. Number of top species to model.
- min_trips
Integer. Minimum unique trips per H3 cell to retain.