Model.addGenConstrAbs()
addGenConstrAbs ( resvar, argvar, name="" )
Add a new general constraint of type GRB.GENCONSTR_ABS to a model.
An ABS constraint
states that the resultant
variable
should be equal to the absolute value of the argument variable
.
You can also add an ABS constraint using the abs_ function.
Arguments:
resvar (Var): The variable whose value will be to equal the absolute value of the argument variable.
argvar (Var): The variable for which the absolute value will be taken.
name (string, optional): Name for the new general constraint.
Note that name will be stored as an ASCII string. Thus, a name
like 'AB' will produce an error, because
'
' can not be represented as an ASCII character. Note
also that names that contain spaces are strongly discouraged,
because they can't be written to LP format files.
Example usage:
# x5 = abs(x1) model.addGenConstrAbs(x5, x1, "absconstr") # overloaded form model.addConstr(x5 == abs_(x1), name="absconstr")