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Merge pull request #1 from GaelTouquet/master
convertrootfile update
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| """ | ||
| Preprocessing our files to a usable format for the recnn program. | ||
| input format : | ||
| [ [[ p1, p2, p3, ... ]] , [[ p1, p2, p3, ... ]] , [[ p1, p2, p3, ... ]] , ...] | ||
| pi = [E,px,py,pz,id ...] | ||
| with "fake particles", i.e. pi=[0.,0.,0.,0.,...] | ||
| output format : | ||
| [ [ p1, p2, ... ] , ...] | ||
| pi = [E,px,py,pz,id=0] | ||
| without fake particles | ||
| """ | ||
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| import numpy as np | ||
| import sys | ||
| import os | ||
| import multiprocessing as mp | ||
| from ROOT import TFile, TLorentzVector | ||
| from root_numpy import tree2array | ||
| from functools import partial | ||
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| def multithreadmap(f,X,ncores=20, **kwargs): | ||
| """ | ||
| multithreading map of a function, default on 20 cpu cores. | ||
| """ | ||
| func = partial(f, **kwargs) | ||
| p=mp.Pool(ncores) | ||
| Xout = p.map(func,X) | ||
| p.terminate() | ||
| return(Xout) | ||
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| #now useless | ||
| def extract_first_element(jet): | ||
| """ | ||
| extract first element of the jet : its components. | ||
| """ | ||
| return(jet[0]) | ||
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| def find_first_non_particle(jet): | ||
| """ | ||
| dichotomy search of first non particle of the jet | ||
| """ | ||
| n=len(jet) | ||
| found = False | ||
| first = 0 | ||
| last = n-1 | ||
| while not found and first <= last : | ||
| m = (last+first)//2 | ||
| if jet[m][0] == 0. and jet[m-1][0] != 0. : | ||
| found = True | ||
| elif jet[m][0] != 0. : | ||
| first = m+1 | ||
| else : | ||
| last = m-1 | ||
| return(m) | ||
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| def select_particle_features(jet, addID=False): | ||
| """ | ||
| select E,px,py,pz of the particle. | ||
| """ | ||
| if addID: | ||
| return(jet[:,[3,0,1,2,0]]) | ||
| else: | ||
| return(jet[:,[3,0,1,2]]) | ||
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| def etatrimtree(tree): | ||
| newtree = tree.CloneTree(0) | ||
| for event in tree: | ||
| vect = TLorentzVector() | ||
| vect.SetPxPyPzE(event.Jet[0],event.Jet[1],event.Jet[2],event.Jet[3]) | ||
| if vect.Eta()<2.6: | ||
| newtree.Fill() | ||
| return newtree | ||
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| def converttorecnnfiles(input_file, addID=False, etacut=True): | ||
| #load data | ||
| f = TFile(input_file) | ||
| tree = f.Get('tree') | ||
| if etacut: | ||
| tmpfile = TFile('tmp.root','recreate') | ||
| tree = etatrimtree(tree) | ||
| jets_array = tree2array(tree,'ptcs') | ||
| if etacut: | ||
| os.remove('tmp.root') | ||
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| #process | ||
| indexes = multithreadmap(find_first_non_particle, jets_array) | ||
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| jets_array = list(jets_array) | ||
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| for i in range(len(jets_array)): | ||
| jets_array[i] = jets_array[i][:indexes[i]] | ||
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| jets_array = multithreadmap(select_particle_features,jets_array, addID=addID) | ||
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| np.save(input_file[:input_file.find('.')], | ||
| jets_array) | ||
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| if __name__ == '__main__': | ||
| import argparse | ||
| parser = argparse.ArgumentParser(description='Convert Dataformated ROOTfiles to numpy files usable in the notebooks.') | ||
| parser.add_argument("rootfile", help="path to the ROOTfile to be converted",type=str) | ||
| # parser.add_argument("--branchlist", help="list of branches to keep", nargs='+') # for now respect naming scheme used to produce trees | ||
| parser.add_argument("--addID", help="wether or not to add the pdgID in the output", action="store_true") | ||
| # parser.add_argument("--cut", help="what cut to apply to the rootfile events e.g. ",type=str) | ||
| args = parser.parse_args() | ||
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| converttorecnnfiles(args.rootfile, addID=args.addID) |
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