Try our new documentation site (beta).
Model.addGenConstrMax()
addGenConstrMax ( resvar, vars, constant=None, name="" )
Add a new general constraint of type GRB.GENCONSTR_MAX to a model.
A MAX constraint
states that the resultant
variable
should be equal to the maximum of the operand variables
and the constant
.
You can also add a MAX constraint using the max_ function.
Arguments:
resvar (Var): The variable whose value will be equal to the max of the other variables.
vars (list of Var): The variables over which the max will be taken. Note that this list may also contain constants (type int, long, or float).
constant (float, optional): An additional operand that allows you to include a constant among the arguments of the max operation.
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 = max(x1, x3, x4, 2.0) model.addGenConstrMax(x5, [x1, x3, x4], 2.0, "maxconstr") # alternative form model.addGenConstrMax(x5, [x1, x3, x4, 2.0], name="maxconstr") # overloaded forms model.addConstr(x5 == max_([x1, x3, x4, 2.0]), name="maxconstr") model.addConstr(x5 == max_(x1, x3, x4, 2.0), name="maxconstr")
![](/wp-content/plugins/hd_documentations/content/images/documentation-ampl-guide.webp?x70725)
![](/wp-content/plugins/hd_documentations/content/images/documentation-cloud.webp?x70725)
![](/wp-content/plugins/hd_documentations/content/images/documentation-example-tour.webp?x70725)
![](/wp-content/plugins/hd_documentations/content/images/documentation-quick-start.webp?x70725)
![](/wp-content/plugins/hd_documentations/content/images/documentation-reference-manuals.webp?x70725)
![](/wp-content/plugins/hd_documentations/content/images/documentation-remote-services.webp?x70725)
![](/wp-content/plugins/hd_documentations/content/images/quickstart-os-linux.webp?x70725)
![](/wp-content/plugins/hd_documentations/content/images/quickstart-os-mac-osx.webp?x70725)
![](/wp-content/plugins/hd_documentations/content/images/quickstart-os-windows.webp?x70725)