export1d

coffea.hist.export1d(hist)[source]

Export a 1-dimensional Hist object to uproot

This allows one to write a coffea histogram into a ROOT file, via uproot.

Parameters:: hist (Hist) – A 1-dimensional histogram object
Returns:: A uproot3_methods.classes.TH1 object
Return type:: out

Examples

Creating a coffea histogram, filling, and writing to a file:

import coffea, uproot3, numpy
h = coffea.hist.Hist("Events", coffea.hist.Bin("var", "some variable", 20, 0, 1))
h.fill(var=numpy.random.normal(size=100))
fout = uproot3.create('output.root')
fout['myhist'] = coffea.hist.export1d(h)
fout.close()