import  ch.psi.pshell.epics.Positioner as Positioner
import  ch.psi.pshell.epics.ChannelDouble as ChannelDouble
import_py("CPython/hfitoff", "hfitoff")
import_py("CPython/extremum", "extremum")

fit_amplitude, fit_x_deg, fit_offset, x_max, fit_x, fit_y = hfitoff(y_array, x_array)

error_bar = mean([val.stdev for val in r.getReadable(0)])