def hstack(self, a=None, name='ar'):
        if not a is None:
            a = a
        elif name == 'ar':
            a = self.ar
        elif name == 'ma':
            a = self.ma
        else:
            raise ValueError('no array or name given')
        return a.swapaxes(1,2).reshape(-1, self.nvarall).T

    #@property
Test that BooleanField with choices and defaults doesn't generate a
dataset/ETHPy150Open statsmodels/statsmodels/statsmodels/tsa/varma_process.py/VarmaPoly.hstack--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.2/tests/regressiontests/model_fields/tests.py/BooleanFieldTests.test_booleanfield_choices_blank