Costs object is used to define additional costs to add to the model's objective function.
Arguments
- name
get_slot_doc("costs", "name")- variable
get_slot_doc("costs", "variable")- desc
get_slot_doc("costs", "desc")- mult
data.frame. Named list or data frame with numeric values for the variable included in the costs-constraint. A constant or a data frame with the same dimensions as the subseted variable.
- subset
data.frame. Named list or data frame with set-values for each dimension of the variable. This slot subsets the variable to the specified set values.
- misc
list. Additional information.
See also
Other class constraint policy:
class-constraint,
class-costs,
newConstraint(),
newSubsidy(),
newTax(),
subsidy-class,
tax-class
Examples
# a per-unit fee on the activity of two technologies, stated as a rate table
newCosts("ACTFEE", variable = "vTechAct",
mult = data.frame(tech = c("ECOA", "EGAS"), value = c(2, 3)),
desc = "Activity fee")
#> An object of class "costs"
#> Slot "name":
#> [1] "ACTFEE"
#>
#> Slot "desc":
#> [1] "Activity fee"
#>
#> Slot "variable":
#> [1] "vTechAct"
#>
#> Slot "subset":
#> data frame with 0 columns and 0 rows
#>
#> Slot "mult":
#> tech value
#> 1 ECOA 2
#> 2 EGAS 3
#>
#> Slot "defVal":
#> [1] 0
#>
#> Slot "misc":
#> list()
#>
# one rate for a subset of processes: `mult` scalar, `subset` picks the members
newCosts("CAPFEE", variable = "vTechNewCap", mult = 1.5,
subset = list(tech = "ECOA"))
#> An object of class "costs"
#> Slot "name":
#> [1] "CAPFEE"
#>
#> Slot "desc":
#> [1] ""
#>
#> Slot "variable":
#> [1] "vTechNewCap"
#>
#> Slot "subset":
#> tech
#> 1 ECOA
#>
#> Slot "mult":
#> data frame with 0 columns and 0 rows
#>
#> Slot "defVal":
#> [1] 1.5
#>
#> Slot "misc":
#> list()
#>