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mrt.py File Reference

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 mrt
 

Detailed Description

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This program reads the ‘aptuple.txt’ file row by row, then creates the Ntuple by adding row by row.

opening file /mnt/build/workspace/root-makedoc-master/rootspi/rdoc/src/master.build/tutorials/pyroot/aptuple.txt ...
writing file aptuple.root ...
done
import sys, os
from ROOT import TFile, TNtuple, TROOT
ifn = os.path.join(str(TROOT.GetTutorialDir()), 'pyroot', 'aptuple.txt')
ofn = 'aptuple.root'
print('opening file %s ...' % ifn)
infile = open( ifn, 'r' )
lines = infile.readlines()
title = lines[0]
labels = lines[1].split()
print('writing file %s ...' % ofn)
outfile = TFile( ofn, 'RECREATE', 'ROOT file with an NTuple' )
ntuple = TNtuple( 'ntuple', title, ':'.join( labels ) )
for line in lines[2:]:
words = line.split()
row = map( float, words )
ntuple.Fill(*row)
outfile.Write()
print('done')
Author
Wim Lavrijsen

Definition in file mrt.py.