def systHists(self, systNames=None):
if systNames == None:
systNames = self._systs.keys()
d = {}
for k in systNames:
d[k] = sum_hists(self._systs[k].GetHists())
continue
return d
def nomHistStatUncert(self, combFunc=add_hist_quad):
hnom = sum_hists(self.nominal().GetHists())
set_hist_uncert(hnom, self.statUncert(combFunc=combFunc))
return hnom
