qhist

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QHist – A Quick Histogram drawer for ROOT::TTree for smoother HEP analysis!

Examples:

Simple draw from tree and parameter (branch name):

h1 = QHist()
h1.trees = t1
h1.params = 'M'
h1.draw()

https://gitlab.com/ckhurewa/qhist/raw/master/docs/figs/1.png

Overlaid comparison between branches, compact syntax:

QHist(trees=t1, params=['mu_PT/1e3','pi_PT/1e3'], xlabel='PT [GeV]', xmax=60).draw()

https://gitlab.com/ckhurewa/qhist/raw/master/docs/figs/2.png

Compare between trees, with filtering, and reusable via templating:

H = QHist(trees=[t1, t2, t3], filters=['mu_PT>20e3'])
H(params='APT'  , xmin=0  , xlabel='PT-asymmetry').draw()
H(params='M/1e3', xmax=120, xlabel='Mass [GeV]').draw()

https://gitlab.com/ckhurewa/qhist/raw/master/docs/figs/3a.png

https://gitlab.com/ckhurewa/qhist/raw/master/docs/figs/3b.png

Read more on https://qhist.readthedocs.io

Installation & dependencies

It’s available from pip install qhist. The package requires an existing installation of PyROOT.

Disclaimer

This packacge was written and used during my PhD in 2013-2017 at EPFL (Lausanne) and LHCb collaboration (CERN), for the work in Z->tau tau cross-section measurement and H->mu tau searches at LHCb (8TeV). I hope it can be of a good use for future analysis…

Development Status
- 4 - Beta
Environment
- Console
Intended Audience
- Developers
- Information Technology
Operating System
- OS Independent
Programming Language
- Python :: 2.7
Topic
- Utilities

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