set.basis: Set Basis
In lpSolveAPI: R Interface to 'lp_solve' Version 5.5.2.0

Set the initial basis in an lpSolve linear program model object.

1	set.basis(lprec, basis, nonbasic = FALSE, default = FALSE)

`lprec`	an lpSolve linear program model object.
`basis`	a numeric vector of unique values from the set `{1, ..., (m+n)}` (where `m` is the number of constraints and `n` is the number of decision variables) specifying the initial basis. The values may be positive or negative where a negative value indicates that the variable is at its lower bound and positive value indicates that the variable is at its upper bound. If `nonbasic` is `FALSE` then the `n` basic variables must be provided. If `nonbasic` is `TRUE` then the nonbasic variables must be provided as well.
`nonbasic`	a logical value. If `TRUE` the nonbasic variables must be included in `basis` as well.
`default`	a logical value. If `TRUE` the default (all slack variable) basis is used. In this case, the value of `basis` and `nonbasic` are ignored.