def _get_moment0_err(self, axis=0):
'''
'''
if self.moment_method is 'cube':
return _cube0(self.cube, axis, self.scale)
elif self.moment_method is 'slice':
return _slice0(self.cube, axis, self.scale)
elif self.moment_method is 'ray':
raise NotImplementedError
def _get_int_intensity_err(self, axis=0):
'''
'''
slab = self.cube.spectral_slab(*self.channel_range)
if self.moment_method is 'cube':
return _cube0(slab, axis, self.scale)
elif self.moment_method is 'slice':
return _slice0(slab, axis, self.scale)
elif self.moment_method is 'ray':
raise NotImplementedError
