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Model.getPWLObj()
getPWLObj ( var )
Retrieve the piecewise-linear objective function for a variable.
The function returns a list of tuples, where each provides the
and 
coordinates for the points that define the piecewise-linear
objective function.
Refer to
this discussion
for additional information on what the values in and mean.
Arguments:
var: A Var object that gives the variable whose objective function is being retrieved.
Return value:
The points that define the piecewise-linear objective function.
Example usage:
> print(model.getPWLObj(var)) [(1, 1), (2, 2), (3, 4)]
