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root:pyroot_th1 [2017/07/11 15:46] โ€“ [Filling a histogram from a tree] iwnroot:pyroot_th1 [2017/09/05 10:35] (current) โ€“ [Handling TH1 histograms] iwn
Line 1: Line 1:
 +[[root:root|Getting started with ROOT]] -> [[root:pyroot|Useful pyROOT snippets]] โ†’ [[root:pyroot_th1|Handling TH1 histograms]]
 +
 ====== Handling TH1 histograms ====== ====== Handling TH1 histograms ======
 +
 +[[https://root.cern.ch/doc/master/classTH1.html|Here]] is the class reference for ''TH1''.
 +
  
 ===== Importing ROOT classes ===== ===== Importing ROOT classes =====
  
-To use ''TH1D'' in ''python'', you can either do+To use ''TH1D'' in ''python'', you can either only import a ''TH1D'' class:
 <code python> <code python>
 from ROOT import TH1D from ROOT import TH1D
 hist = TH1D("hist_name","hist_title",100,0,100) hist = TH1D("hist_name","hist_title",100,0,100)
 </code> </code>
-or+or //all// classes:
 <code python> <code python>
 from ROOT import * # loads all classes, and thus takes longer from ROOT import * # loads all classes, and thus takes longer
 hist = TH1D("hist_name","hist_title",100,0,100) hist = TH1D("hist_name","hist_title",100,0,100)
 </code> </code>
-or+or only the ''ROOT'' module:
 <code python> <code python>
 import ROOT import ROOT
root/pyroot_th1.1499780769.txt.gz ยท Last modified: 2017/07/11 15:46 by iwn