How to define histogram with variable bin width in python

[bellenot]

See for example:

Python macro and histogram with variable bin width

Angi, the TH1::FillN() isn’t going to work with just two arguments, but to show how to pass a list through a double* pointer:[code]from ROOT import * from array import array binLowE = [2,4,9,15,20,22] uniformTau = TH1D(“uniformTau”,"",5,array(‘d’,binLowE)) #uniformTau.FillN(5,10) uniformTau.Draw()[/code] I.e. just use an array from module array. The buffer interface does the rest. HTH, Wim

(searching on the forum is sometimes useful…)