Extract the number of zones in an object.
number_of_zones(x) # S4 method for ConservationProblem number_of_zones(x) # S4 method for OptimizationProblem number_of_zones(x) # S4 method for ZonesRaster number_of_zones(x) # S4 method for ZonesCharacter number_of_zones(x)
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integer
number of zones.
# load data data(sim_pu_zones_stack, sim_features_zones) # print number of zones in a Zones object print(number_of_zones(sim_features_zones))#> [1] 3# create problem with multiple zones p <- problem(sim_pu_zones_stack, sim_features_zones) %>% add_min_set_objective() %>% add_relative_targets(matrix(0.2, ncol = 3, nrow = 5)) %>% add_binary_decisions() # print number of zones in the problem print(number_of_zones(p))#> [1] 3