Extract the number of zones in an object.
Usage
number_of_zones(x, ...)
# S3 method for ConservationProblem
number_of_zones(x, ...)
# S3 method for OptimizationProblem
number_of_zones(x, ...)
# S3 method for ZonesRaster
number_of_zones(x, ...)
# S3 method for ZonesSpatRaster
number_of_zones(x, ...)
# S3 method for ZonesCharacter
number_of_zones(x, ...)
Arguments
- x
problem()
,optimization_problem()
, orzones()
object.- ...
not used.
Examples
# \dontrun{
# load data
sim_zones_pu_raster <- get_sim_zones_pu_raster()
sim_zones_features <- get_sim_zones_features()
# print number of zones in a Zones object
print(number_of_zones(sim_zones_features))
#> [1] 3
# create problem with multiple zones
p <-
problem(sim_zones_pu_raster, sim_zones_features) %>%
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
# }