Add options for the ratio plot error bar calculation
The current error calculation assumes the ratio is for an efficiency plot, which will not always be the case. https://gitlab.cern.ch/fast-hep/public/fast-plotter/blob/master/fast_plotter/plotting.py#L134
It would be good to add the error calculation type as an option. The main options I can think of are
- efficiency
- data/MC (standard)
- data/MC (Poisson)
Edited by Jacob Thomas Linacre