View source: R/number_of_total_units.R
number_of_total_units | R Documentation |
Extract the number of total units in an object.
number_of_total_units(x, ...)
## S3 method for class 'ConservationProblem'
number_of_total_units(x, ...)
x |
|
... |
not used. |
The total units for an object corresponds to the total number
of entries (e.g., rows, cells) for the planning unit data.
For example, a single-layer raster dataset might have 90 cells
and only two of these cells contain non-missing (NA
) values.
As such, this dataset would have 90 total units and two planning units.
An integer
number of total units.
## Not run:
# load data
sim_pu_raster <- get_sim_pu_raster()
sim_features <- get_sim_features()
sim_zones_pu_raster <- get_sim_zones_pu_raster()
sim_zones_features <- get_sim_zones_features()
# create problem with one zone
p1 <-
problem(sim_pu_raster, sim_features) %>%
add_min_set_objective() %>%
add_relative_targets(0.2) %>%
add_binary_decisions()
# print number of planning units
print(number_of_planning_units(p1))
# print number of total units
print(number_of_total_units(p1))
# create problem with multiple zones
p2 <-
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 planning units
print(number_of_planning_units(p2))
# print number of total units
print(number_of_total_units(p2))
## End(Not run)
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