select_events.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
 
 
 
# Demonstrates selecting events to save in the event display:
# * create 'conditionspath' with e.g. RootOutput
# * use if_true() on the display module to activate it
#
# Once started, a widget will be shown to toggle the return value,
# if the box is checked when advancing to the next event, the event
# will be saved in saved_from_display.root.
 
import basf2 as b2
from simulation import add_simulation
 
# register necessary modules
eventinfosetter = b2.register_module('EventInfoSetter')
eventinfosetter.param('evtNumList', [5000])
 
main = b2.Path()
 
# add modules to paths
main.add_module(eventinfosetter)
 
main.add_module('EvtGenInput')
 
add_simulation(main)
 
# add_reconstruction(main)
 
display = main.add_module('Display')
conditionpath = b2.Path()
conditionpath.add_module('RootOutput', outputFileName='saved_from_display.root')
display.if_true(conditionpath)
 
b2.process(main)
print(b2.statistics)