pyROOT Interactivity and matplotlib

[ksmith]

I found a “solution” on the forum, but it breaks the matplotlib plotting.

Problems using rootpy over ssh

If you just want to save image files and don’t want matplotlib to attempt to create a graphical window you can do this: import matplotlib matplotlib.use('Agg') # do this before importing pyplot from matplotlib import pyplot pyplot.ioff() This puts matplotlib into a batch state similar to ROOT’s ROOT.gROOT.SetBatch(True).

import matplotlib
#This line fixes the interactivity issue, but now matplotlib doesn't work (see below).
matplotlib.use('Agg')
import matplotlib.pyplot as plt

import ROOT

gLine = ROOT.TGraph()
gLine.SetPoint(0,0,1)
gLine.SetPoint(1,2,3)

gLine.Draw("ALP")
ROOT.gPad.Update()

#This plot never appears!
plt.plot((0,2), (1,3))
plt.show()

raw_input("Press Enter to exit...")