sasoptpy.Model.add_implicit_variable

Model.add_implicit_variable(self, argv=None, name=None)

Adds an implicit variable to the model

Parameters

argvGenerator-type object

Generator object where each item is an entry

namestring

Name of the implicit variable

Notes

• Based on whether the implicit variables are generated by a regular or abstract expression, they can appear in generated OPTMODEL codes.

Examples

>>> x = m.add_variables(range(5), name='x')
>>> y = m.add_implicit_variable((
>>>     x[i] + 2 * x[i+1] for i in range(4)), name='y')
>>> print(y[2])
x[2] + 2 * x[3]

>>> I = m.add_set(name='I')
>>> z = m.add_implicit_variable((x[i] * 2 + 2 for i in I), name='z')
>>> print(z._defn())
impvar z {i_1 in I} = 2 * x[i_1] + 2;