def get_dated_items(self):
        raise NotImplementedError('A DateView must provide an implementation of get_dated_items()')
Average the matrix over the given axis. If the axis is None,
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/views/generic/dates.py/BaseDateListView.get_dated_items--crossover with--dataset/ETHPy150Open jimmycallin/pydsm/pydsm/indexmatrix.py/IndexMatrix.mean