def iterdirty(self):
        return iter(chain(itervalues(self._new), itervalues(self._modified)))
:param fname_centerline: centerline in RPI orientation
dataset/ETHPy150Open lsbardel/python-stdnet/stdnet/odm/session.py/SessionModel.iterdirty--crossover with--dataset/ETHPy150Open neuropoly/spinalcordtoolbox/dev/straightening/sct_straighten_spinalcord_LargeFOVOutput.py/smooth_centerline