add_variable function

Add a variable to the model

A variable can either be a name or an indexed name. See examples.

add_variable(.model, .variable, ..., type = "continuous", lb = -Inf, ub = Inf)

add_variable_(
  .model,
  .variable,
  ...,
  type = "continuous",
  lb = -Inf,
  ub = Inf,
  .dots
)

Arguments

• .model: the model
• .variable: the variable name/definition
• ...: quantifiers for the indexed variable. Including filters
• type: must be either continuous, integer or binary
• lb: the lower bound of the variable
• ub: the upper bound of the variable
• .dots: Used to work around non-standard evaluation.

Examples

library(magrittr)
MIPModel() %>%
  add_variable(x) %>% # creates 1 variable named x
  add_variable(y[i],
    i = 1:10, i %% 2 == 0,
    type = "binary"
  ) # creates 4 variables