Computes effort activity coefficient — compute_effort_activity

The activity coefficient is computed from the effort. Depending on the source of effort data, the source information used is different: - In the case of 'fisher_interview' the coefficient of activity is computed as the ratio between the effort_fishing_duration and the effort_fishing_reference_period. - In the case of 'boat_counting' the coefficient of activity is computed as the ratio between the fleet_engagement_number and the fleet_engagement_max

The computation is performed grouped by a strata compound at minimum by the year, month and fishing_unit. This strata can be extended by adding one or more columns with the minor_strata argument.

Note: Additional check are performed to remove data with NAs, and ensure data consistency

Usage

compute_effort_activity_coefficient(
  effort,
  effort_source = c("fisher_interview", "boat_counting"),
  minor_strata = NULL
)

Arguments

effort: effort data
effort_source: effort
minor_strata: minor_strata. Default is NULL

Value

a tibble object giving activity coefficient by strata