Documentation

GRBModel.Set()

Set the value(s) of a parameter or attribute. Use this method for parameters, for scalar model attributes, or for arrays of constraint or variable attributes.

void	Set (	GRB.DoubleParam	param,
		double	newvalue )

Set the value of a double-valued parameter.

The difference between setting a parameter on a model and setting it on an environment (i.e., through GRBEnv.Set) is that the former modifies the parameter for a single model, while the latter modifies the parameter for every model that is subsequently built using that environment (and leaves the parameter unchanged for models that were previously built using that environment).

Arguments:

param: The parameter being modified.

newvalue: The desired new value for the parameter.

void	Set (	GRB.IntParam	param,
		int	newvalue )

Set the value of an int-valued parameter.

The difference between setting a parameter on a model and setting it on an environment (i.e., through GRBEnv.Set) is that the former modifies the parameter for a single model, while the latter modifies the parameter for every model that is subsequently built using that environment (and leaves the parameter unchanged for models that were previously built using that environment).

Arguments:

param: The parameter being modified.

newvalue: The desired new value for the parameter.

void	Set (	GRB.StringParam	param,
		string	newvalue )

Set the value of a string-valued parameter.

The difference between setting a parameter on a model and setting it on an environment (i.e., through GRBEnv.Set) is that the former modifies the parameter for a single model, while the latter modifies the parameter for every model that is subsequently built using that environment (and leaves the parameter unchanged for models that were previously built using that environment).

Arguments:

param: The parameter being modified.

newvalue: The desired new value for the parameter.

void	Set (	GRB.CharAttr	attr,
		GRBVar[]	vars,
		char[]	newvalues )

Set a char-valued variable attribute for an array of variables.

Arguments:

attr: The attribute being modified.

vars: The variables whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input variable.

void	Set (	GRB.CharAttr	attr,
		GRBVar[]	vars,
		char[]	newvalues,
		int	start,
		int	len )

Set a char-valued variable attribute for a sub-array of variables.

Arguments:

attr: The attribute being modified.

vars: A one-dimensional array of variables whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input variable.

start: The index of the first variable of interest in the list.

len: The number of variables.

void	Set (	GRB.CharAttr	attr,
		GRBVar[,]	vars,
		char[,]	newvalues )

Set a char-valued variable attribute for a two-dimensional array of variables.

Arguments:

attr: The attribute being modified.

vars: A two-dimensional array of variables whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input variable.

void	Set (	GRB.CharAttr	attr,
		GRBVar[„]	vars,
		char[„]	newvalues )

Set a char-valued variable attribute for a three-dimensional array of variables.

Arguments:

attr: The attribute being modified.

vars: A three-dimensional array of variables whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input variable.

void	Set (	GRB.CharAttr	attr,
		GRBConstr[]	constrs,
		char[]	newvalues )

Set a char-valued constraint attribute for an array of constraints.

Arguments:

attr: The attribute being modified.

constrs: The constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input constraint.

void	Set (	GRB.CharAttr	attr,
		GRBConstr[]	constrs,
		char[]	newvalues,
		int	start,
		int	len )

Set a char-valued constraint attribute for a sub-array of constraints.

Arguments:

attr: The attribute being modified.

constrs: A one-dimensional array of constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input constraint.

start: The index of the first constraint of interest in the list.

len: The number of constraints.

void	Set (	GRB.CharAttr	attr,
		GRBConstr[,]	constrs,
		char[,]	newvalues )

Set a char-valued constraint attribute for a two-dimensional array of constraints.

Arguments:

attr: The attribute being modified.

constrs: A two-dimensional array of constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input constraint.

void	Set (	GRB.CharAttr	attr,
		GRBConstr[„]	constrs,
		char[„]	newvalues )

Set a char-valued constraint attribute for a three-dimensional array of constraints.

Arguments:

attr: The attribute being modified.

constrs: A three-dimensional array of constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input constraint.

void	Set (	GRB.CharAttr	attr,
		GRBQConstr[]	qconstrs,
		char[]	newvalues )

Set a char-valued quadratic constraint attribute for an array of quadratic constraints.

Arguments:

attr: The attribute being modified.

qconstrs: The quadratic constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input quadratic constraint.

void	Set (	GRB.CharAttr	attr,
		GRBQConstr[]	qconstrs,
		char[]	newvalues,
		int	start,
		int	len )

Set a char-valued quadratic constraint attribute for a sub-array of quadratic constraints.

Arguments:

attr: The attribute being modified.

qconstrs: A one-dimensional array of quadratic constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input quadratic constraint.

start: The index of the first quadratic constraint of interest in the list.

len: The number of quadratic constraints.

void	Set (	GRB.CharAttr	attr,
		GRBQConstr[,]	qconstrs,
		char[,]	newvalues )

Set a char-valued quadratic constraint attribute for a two-dimensional array of quadratic constraints.

Arguments:

attr: The attribute being modified.

qconstrs: A two-dimensional array of quadratic constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input quadratic constraint.

void	Set (	GRB.CharAttr	attr,
		GRBQConstr[„]	qconstrs,
		char[„]	newvalues )

Set a char-valued quadratic constraint attribute for a three-dimensional array of quadratic constraints.

Arguments:

attr: The attribute being modified.

qconstrs: A three-dimensional array of quadratic constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input quadratic constraint.

void	Set (	GRB.DoubleAttr	attr,
		double	newvalue )

Set the value of a double-valued model attribute.

Arguments:

attr: The attribute being modified.

newvalue: The desired new value for the attribute.

void	Set (	GRB.DoubleAttr	attr,
		GRBVar[]	vars,
		double[]	newvalues )

Set a double-valued variable attribute for an array of variables.

Arguments:

attr: The attribute being modified.

vars: The variables whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input variable.

void	Set (	GRB.DoubleAttr	attr,
		GRBVar[]	vars,
		double[]	newvalues,
		int	start,
		int	len )

Set a double-valued variable attribute for a sub-array of variables.

Arguments:

attr: The attribute being modified.

vars: A one-dimensional array of variables whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input variable.

start: The index of the first variable of interest in the list.

len: The number of variables.

void	Set (	GRB.DoubleAttr	attr,
		GRBVar[,]	vars,
		double[,]	newvalues )

Set a double-valued variable attribute for a two-dimensional array of variables.

Arguments:

attr: The attribute being modified.

vars: A two-dimensional array of variables whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input variable.

void	Set (	GRB.DoubleAttr	attr,
		GRBVar[„]	vars,
		double[„]	newvalues )

Set a double-valued variable attribute for a three-dimensional array of variables.

Arguments:

attr: The attribute being modified.

vars: A three-dimensional array of variables whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input variable.

void	Set (	GRB.DoubleAttr	attr,
		GRBConstr[]	constrs,
		double[]	newvalues )

Set a double-valued constraint attribute for an array of constraints.

Arguments:

attr: The attribute being modified.

constrs: The constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input constraint.

void	Set (	GRB.DoubleAttr	attr,
		GRBConstr[]	constrs,
		double[]	newvalues,
		int	start,
		int	len )

Set a double-valued constraint attribute for a sub-array of constraints.

Arguments:

attr: The attribute being modified.

constrs: A one-dimensional array of constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input constraint.

start: The first constraint of interest in the list.

len: The number of constraints.

void	Set (	GRB.DoubleAttr	attr,
		GRBConstr[,]	constrs,
		double[,]	newvalues )

Set a double-valued constraint attribute for a two-dimensional array of constraints.

Arguments:

attr: The attribute being modified.

constrs: A two-dimensional array of constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input constraint.

void	Set (	GRB.DoubleAttr	attr,
		GRBConstr[„]	constrs,
		double[„]	newvalues )

Set a double-valued constraint attribute for a three-dimensional array of constraints.

Arguments:

attr: The attribute being modified.

constrs: A three-dimensional array of constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input constraint.

void	Set (	GRB.DoubleAttr	attr,
		GRBQConstr[]	qconstrs,
		double[]	newvalues )

Set a double-valued quadratic constraint attribute for an array of quadratic constraints.

Arguments:

attr: The attribute being modified.

qconstrs: The quadratic constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input quadratic constraint.

void	Set (	GRB.DoubleAttr	attr,
		GRBQConstr[]	qconstrs,
		double[]	newvalues,
		int	start,
		int	len )

Set a double-valued quadratic constraint attribute for a sub-array of quadratic constraints.

Arguments:

attr: The attribute being modified.

qconstrs: A one-dimensional array of quadratic constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input quadratic constraint.

start: The first quadratic constraint of interest in the list.

len: The number of quadratic constraints.

void	Set (	GRB.DoubleAttr	attr,
		GRBQConstr[,]	qconstrs,
		double[,]	newvalues )

Set a double-valued quadratic constraint attribute for a two-dimensional array of quadratic constraints.

Arguments:

attr: The attribute being modified.

qconstrs: A two-dimensional array of quadratic constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input quadratic constraint.

void	Set (	GRB.DoubleAttr	attr,
		GRBQConstr[„]	qconstrs,
		double[„]	newvalues )

Set a double-valued quadratic constraint attribute for a three-dimensional array of quadratic constraints.

Arguments:

attr: The attribute being modified.

qconstrs: A three-dimensional array of quadratic constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input quadratic constraint.

void	Set (	GRB.IntAttr	attr,
		int	newvalue )

Set the value of an int-valued model attribute.

Arguments:

attr: The attribute being modified.

newvalue: The desired new value for the attribute.

void	Set (	GRB.IntAttr	attr,
		GRBVar[]	vars,
		int[]	newvalues )

Set an int-valued variable attribute for an array of variables.

Arguments:

attr: The attribute being modified.

vars: The variables whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input variable.

void	Set (	GRB.IntAttr	attr,
		GRBVar[]	vars,
		int[]	newvalues,
		int	start,
		int	len )

Set an int-valued variable attribute for a sub-array of variables.

Arguments:

attr: The attribute being modified.

vars: A one-dimensional array of variables whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input variable.

start: The index of the first variable of interest in the list.

len: The number of variables.

void	Set (	GRB.IntAttr	attr,
		GRBVar[,]	vars,
		int[,]	newvalues )

Set an int-valued variable attribute for a two-dimensional array of variables.

Arguments:

attr: The attribute being modified.

vars: A two-dimensional array of variables whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input variable.

void	Set (	GRB.IntAttr	attr,
		GRBVar[„]	vars,
		int[„]	newvalues )

Set an int-valued variable attribute for a three-dimensional array of variables.

Arguments:

attr: The attribute being modified.

vars: A three-dimensional array of variables whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input variable.

void	Set (	GRB.IntAttr	attr,
		GRBConstr[]	constrs,
		int[]	newvalues )

Set an int-valued constraint attribute for an array of constraints.

Arguments:

attr: The attribute being modified.

constrs: The constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input constraint.

void	Set (	GRB.IntAttr	attr,
		GRBConstr[]	constrs,
		int[]	newvalues,
		int	start,
		int	len )

Set an int-valued constraint attribute for a sub-array of constraints.

Arguments:

attr: The attribute being modified.

constrs: A one-dimensional array of constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input constraint.

start: The index of the first constraint of interest in the list.

len: The number of constraints.

void	Set (	GRB.IntAttr	attr,
		GRBConstr[,]	constrs,
		int[,]	newvalues )

Set an int-valued constraint attribute for a two-dimensional array of constraints.

Arguments:

attr: The attribute being modified.

constrs: A two-dimensional array of constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input constraint.

void	Set (	GRB.IntAttr	attr,
		GRBConstr[„]	constrs,
		int[„]	newvalues )

Set an int-valued constraint attribute for a three-dimensional array of constraints.

Arguments:

attr: The attribute being modified.

constrs: A three-dimensional array of constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input constraint.

void	Set (	GRB.StringAttr	attr,
		string	newvalue )

Set the value of a string-valued model attribute.

Arguments:

attr: The attribute being modified.

newvalue: The desired new value for the attribute.

void	Set (	GRB.StringAttr	attr,
		GRBVar[]	vars,
		string[]	newvalues )

Set a string-valued variable attribute for an array of variables.

Arguments:

attr: The attribute being modified.

vars: The variables whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input variable.

void	Set (	GRB.StringAttr	attr,
		GRBVar[]	vars,
		string[]	newvalues,
		int	start,
		int	len )

Set a string-valued variable attribute for a sub-array of variables.

Arguments:

attr: The attribute being modified.

vars: A one-dimensional array of variables whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input variable.

start: The index of the first variable of interest in the list.

len: The number of variables.

void	Set (	GRB.StringAttr	attr,
		GRBVar[,]	vars,
		string[,]	newvalues )

Set a string-valued variable attribute for a two-dimensional array of variables.

Arguments:

attr: The attribute being modified.

vars: A two-dimensional array of variables whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input variable.

void	Set (	GRB.StringAttr	attr,
		GRBVar[„]	vars,
		string[„]	newvalues )

Set a string-valued variable attribute for a three-dimensional array of variables.

Arguments:

attr: The attribute being modified.

vars: A three-dimensional array of variables whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input variable.

void	Set (	GRB.StringAttr	attr,
		GRBConstr[]	constrs,
		string[]	newvalues )

Set a string-valued constraint attribute for an array of constraints.

Arguments:

attr: The attribute being modified.

constrs: The constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input constraint.

void	Set (	GRB.StringAttr	attr,
		GRBConstr[]	constrs,
		string[]	newvalues,
		int	start,
		int	len )

Set a string-valued constraint attribute for a sub-array of constraints.

Arguments:

attr: The attribute being modified.

constrs: A one-dimensional array of constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input constraint.

start: The index of the first constraint of interest in the list.

len: The number of constraints.

void	Set (	GRB.StringAttr	attr,
		GRBConstr[,]	constrs,
		string[,]	newvalues )

Set a string-valued constraint attribute for a two-dimensional array of constraints.

Arguments:

attr: The attribute being modified.

constrs: A two-dimensional array of constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input constraint.

void	Set (	GRB.StringAttr	attr,
		GRBConstr[„]	constrs,
		string[„]	newvalues )

Set a string-valued constraint attribute for a three-dimensional array of constraints.

Arguments:

attr: The attribute being modified.

constrs: A three-dimensional array of constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input constraint.

void	Set (	GRB.StringAttr	attr,
		GRBQConstr[]	qconstrs,
		string[]	newvalues )

Set a string-valued quadratic constraint attribute for an array of quadratic constraints.

Arguments:

attr: The attribute being modified.

qconstrs: The quadratic constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input quadratic constraint.

void	Set (	GRB.StringAttr	attr,
		GRBQConstr[]	qconstrs,
		string[]	newvalues,
		int	start,
		int	len )

Set a string-valued quadratic constraint attribute for a sub-array of quadratic constraints.

Arguments:

attr: The attribute being modified.

qconstrs: A one-dimensional array of quadratic constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input quadratic constraint.

start: The index of the first quadratic constraint of interest in the list.

len: The number of quadratic constraints.

void	Set (	GRB.StringAttr	attr,
		GRBQConstr[,]	qconstrs,
		string[,]	newvalues )

Set a string-valued quadratic constraint attribute for a two-dimensional array of quadratic constraints.

Arguments:

attr: The attribute being modified.

qconstrs: A two-dimensional array of quadratic constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input quadratic constraint.

void	Set (	GRB.StringAttr	attr,
		GRBQConstr[„]	qconstrs,
		string[„]	newvalues )

Set a string-valued quadratic constraint attribute for a three-dimensional array of quadratic constraints.

Arguments:

attr: The attribute being modified.

qconstrs: A three-dimensional array of quadratic constraints whose attribute values are being modified.

newvalues: The desired new values for the attribute for each input quadratic constraint.