Adds a boundary constraint to a scenario object
Source:R/add_constraint.R
add_constraint_boundary.RdThe purpose of boundary constraints is to limit a future projection within a specified area (such as for example a range or ecoregion). This can help to limit unreasonable projections into geographic space.
Similar to boundary constraints it is also possible to define a "zone"
for the scenario projections, similar as was done for model training. The
difference to a boundary constraint is that the boundary constraint is
applied posthoc as a hard cut on any projection, while the zones would allow
any projection (and other constraints) to be applied within the zone.
Note: Setting a boundary constraint for future projections effectively potentially suitable areas!
Usage
add_constraint_boundary(mod, layer, ...)
# S4 method for class 'BiodiversityScenario,sf'
add_constraint_boundary(mod, layer, method = "boundary", ...)
# S4 method for class 'BiodiversityScenario,ANY'
add_constraint_boundary(mod, layer, method = "boundary", ...)Arguments
- mod
A
BiodiversityScenarioobject with specified predictors.- layer
A
SpatRasterorsfobject with the same extent as the model background. Has to be binary and is used for a posthoc masking of projected grid cells.- ...
passed on parameters. See also the specific methods for adding constraints.
- method
A
characterindicating the type of constraints to be added to the scenario. See details for more information.
See also
Other constraint:
add_constraint(),
add_constraint_MigClim(),
add_constraint_adaptability(),
add_constraint_connectivity(),
add_constraint_dispersal(),
add_constraint_minsize(),
add_constraint_threshold(),
simulate_population_steps()
Examples
if (FALSE) { # \dontrun{
# Add scenario constraint
scenario(fit) |> add_constraint_boundary(range)
} # }