Roll Up H3 Fishing Effort to a Coarser Resolution

Re-aggregates fishing effort from a fine H3 resolution to a coarser parent resolution by mapping each cell to its containing parent hexagon and summing ping counts. Useful for multi-scale analysis without rerunning the full spatial join.

Usage

rollup_h3_resolution(aggregated_df, target_res)

Arguments

aggregated_df

A data frame with columns h3_index and fishing_pings, as returned by aggregate_h3_effort().

target_res

Integer. The target H3 resolution. Must be lower (coarser) than the resolution used to create aggregated_df.

Value

A data frame with columns parent_h3_index and total_fishing_pings.

See also

assign_h3_indices(), aggregate_h3_effort()