GRBModel::addVars()
Add new decision variables to a model.
| GRBVar* | addVars ( | int | count, |
| char | type=GRB_CONTINUOUS ) |
Add count new decision variables to a model. All
associated attributes take their default values, except the
variable type, which is specified as an argument.
Arguments:
count: Number of variables to add.
type (optional): Variable type for new variables (GRB_CONTINUOUS, GRB_BINARY, GRB_INTEGER, GRB_SEMICONT, or GRB_SEMIINT).
Return value:
Array of new variable objects. Note that the result is heap-allocated, and must be returned to the heap by the user.
| GRBVar* | addVars ( | const double* | lb, |
| const double* | ub, | ||
| const double* | obj, | ||
| const char* | type, | ||
| const string* | names, | ||
| int | count ) |
Add count new decision variables to a model. This signature
allows you to use arrays to hold the various variable attributes
(lower bound, upper bound, etc.).
Arguments:
lb: Lower bounds for new variables. Can be NULL, in which case the variables get lower bounds of 0.0.
ub: Upper bounds for new variables. Can be NULL, in which case the variables get infinite upper bounds.
obj: Objective coefficients for new variables. Can be NULL, in which case the variables get objective coefficients of 0.0.
type: Variable types for new variables (GRB_CONTINUOUS, GRB_BINARY, GRB_INTEGER, GRB_SEMICONT, or GRB_SEMIINT). Can be NULL, in which case the variables are assumed to be continuous.
names: Names for new variables. Can be NULL, in which case all variables are given default names.
count: The number of variables to add.
Return value:
Array of new variable objects. Note that the result is heap-allocated, and must be returned to the heap by the user.
| GRBVar* | addVars ( | const double* | lb, |
| const double* | ub, | ||
| const double* | obj, | ||
| const char* | type, | ||
| const string* | names, | ||
| const GRBColumn* | cols, | ||
| int | count ) |
Add new decision variables to a model. This signature allows you to specify the set of constraints to which each new variable belongs using an array of GRBColumn objects.
Arguments:
lb: Lower bounds for new variables. Can be NULL, in which case the variables get lower bounds of 0.0.
ub: Upper bounds for new variables. Can be NULL, in which case the variables get infinite upper bounds.
obj: Objective coefficients for new variables. Can be NULL, in which case the variables get objective coefficients of 0.0.
type: Variable types for new variables (GRB_CONTINUOUS, GRB_BINARY, GRB_INTEGER, GRB_SEMICONT, or GRB_SEMIINT). Can be NULL, in which case the variables are assumed to be continuous.
names: Names for new variables. Can be NULL, in which case all variables are given default names.
cols: GRBColumn objects for specifying a set of constraints to which each new column belongs.
count: The number of variables to add.
Return value:
Array of new variable objects. Note that the result is heap-allocated, and must be returned to the heap by the user.
