Extract the constraint matrix, the right hand side and the sense from a model

extract_constraints(model)

Arguments

model

the model

Value

a list with three named elements. 'matrix' the (sparse) constraint matrix from the Matrix package. 'rhs' is the right hand side vector in the order of the matrix. 'sense' is a vector of the constraint senses

Examples

library(magrittr) model <- MIPModel() %>% add_variable(x[i], i = 1:3) %>% add_variable(y[i], i = 1:3) %>% add_constraint(x[i] + y[i] <= 1, i = 1:3) extract_constraints(model)
#> $matrix #> 3 x 6 sparse Matrix of class "dgCMatrix" #> #> [1,] 1 . . 1 . . #> [2,] . 1 . . 1 . #> [3,] . . 1 . . 1 #> #> $sense #> [1] "<=" "<=" "<=" #> #> $rhs #> [1] 1 1 1 #>