Create/retrieve a multi-objective environment for the objective with the given index. This environment enables fine-grained control over the multi-objective optimization process. Specifically, by changing parameters on this environment, you modify the behavior of the optimization that occurs during the corresponding pass of the multi-objective optimization.
Each multi-objective environment starts with a copy of the current model environment.
Please refer to the discussion of Multiple Objectives for information on how to specify multiple objective functions and control the trade-off between them.
The environment associated with a given multiobjective number in the model. A NULL return value indicates that there was a problem retrieving the environment.
model: The model from where we want to retrieve the multiobjecitve environment.
num: The multiobjective number.
GRBenv *env0 = GRBgetmultiobjenv(model,0); GRBenv *env1 = GRBgetmultiobjenv(model,1); GRBsetintparam(env0, "Method", 2); GRBsetintparam(env1, "Method", 1); GRBoptimize(model); GRBdiscardmultiobjenvs(model);