-
Notifications
You must be signed in to change notification settings - Fork 4.3k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge branch 'ImprovedParsing' into ImprovedParsingMerge
- Loading branch information
Showing
3 changed files
with
170 additions
and
10 deletions.
There are no files selected for viewing
107 changes: 107 additions & 0 deletions
107
GeneratorInterface/LHEInterface/test/createLHEFormatFromROOTFile.py
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| import ROOT | ||
| import sys | ||
|
|
||
|
|
||
| """ | ||
| Usage | ||
| python createLHEFormatFromROOTFile.py inputfile outputfile pdgId_particle_to_undo_decay1 pdgId_particle_to_undo_decay2 pdgId_particle_to_undo_decay3 ... | ||
| """ | ||
|
|
||
| args = sys.argv[:] | ||
|
|
||
| class HEPPart(object): | ||
| def __init__(self,event, idx): | ||
| """ | ||
| Class to organize the description of a particle in the LHE event | ||
| event : whole event information (usually a entry in the input TTree) | ||
| idx : the index of the particle inside the LHE file | ||
| """ | ||
| for att in ["pt","eta","phi", "mass","lifetime","pdgId","status","spin","color1", "color2","mother1","mother2","incomingpz"]: | ||
| setattr(self, att, getattr(event, "LHEPart_"+att)[idx]) | ||
| self.setP4() | ||
|
|
||
| def setP4(self): | ||
| self.p4 = ROOT.TLorentzVector() | ||
| if self.status != -1: | ||
| self.p4.SetPtEtaPhiM(self.pt, self.eta, self.phi, self.mass) | ||
| else: | ||
| self.p4.SetPxPyPzE(0.,0.,self.incomingpz, abs(self.incomingpz)) | ||
| def printPart(self): | ||
| """ Just to print it pretty """ | ||
| return " {pdg:d} {status:d} {mother1:d} {mother2:d} {color1:d} {color2:d} {px:e} {py:e} {pz:e} {energy:e} {mass:e} {time:e} {spin:e}\n".format(pdg=self.pdgId,status=self.status, mother1=self.mother1, mother2=self.mother2, color1=self.color1, color2=self.color2, px=self.p4.Px(), py=self.p4.Py(), pz=self.p4.Pz(), energy=self.p4.E(), mass=self.mass, time=self.lifetime, spin=self.spin) | ||
|
|
||
|
|
||
| class LHEPrinter(object): | ||
| def __init__(self,theFile,theTree,outputLHE,undoDecays=[], chunkers=-1, prDict={}): | ||
| """ | ||
| theFile : path to input root file with the whole LHEinformation | ||
| theTree : number of ttree inside the file, usually "Events" | ||
| outputLHE: name of output .lhe file | ||
| undoDecays: pdgId of particles whose decays we want to undo (i.e. W that are decayed with madspin, as the reweighting is called before madspin) | ||
| chunkers: process by chunks in case we want to later multithread the jobs. Argument is max size (in events) of the chunks | ||
| prDict : a dictionary indicating possible mismatchings between the ProcessID in the new gridpack and the old (matching the numbers at generate p p > x y z @0 in the run card) | ||
| """ | ||
|
|
||
| self.prDict = prDict | ||
| self.outputLHE = outputLHE | ||
| self.fil = ROOT.TFile(theFile,"OPEN") | ||
| self.tree = self.fil.Get(theTree) | ||
| self.undoDecays = undoDecays | ||
| self.baseheader = "<event nplo=\" {nplo} \" npnlo=\" {npnlo} \">\n" | ||
| self.baseline1 = " {nparts} {prid} {weight} {scale} {aqed} {aqcd}\n" | ||
| self.baseender = "<rwgt>\n</rwgt>\n</event>\n" | ||
| self.chunkers = chunkers | ||
|
|
||
| def insideLoop(self): | ||
| """ Loop over all events and process the root file into a plain text LHE file""" | ||
| totalEvents = self.tree.GetEntries() | ||
| if self.chunkers == -1 or self.chunkers > totalEvents: | ||
| self.output = open(self.outputLHE,"w") | ||
| self.chunkers = totalEvents + 1 | ||
| else: | ||
| self.output = open(self.outputLHE+"chunk0","w") | ||
| chunk = 0 | ||
|
|
||
| print "Processing %i events, please wait..."%totalEvents | ||
| iEv = 0 | ||
| pEv = 0 | ||
| chunk = 0 | ||
| for ev in self.tree: | ||
| iEv += 1 | ||
| pEv += 1 | ||
| if pEv >= self.chunkers: | ||
| pEv = 0 | ||
| chunk += 1 | ||
| self.output.close() | ||
| self.output = open(self.outputLHE+"chunk%i"%chunk,"w") | ||
| print "...Event %i/%i"%(iEv, totalEvents) | ||
| self.process(ev) | ||
|
|
||
| def process(self, ev): | ||
| """First produce the global line like <event nplo=" -1 " npnlo=" 1 ">""" | ||
| self.output.write(self.baseheader.format(nplo = ord(str(ev.LHE_NpLO)) if ord(str(ev.LHE_NpLO)) != 255 else -1, npnlo = ord(str(ev.LHE_NpNLO)) if ord(str(ev.LHE_NpNLO)) != 255 else -1)) | ||
|
|
||
| """Then we need to treat the whole thing to undo the madspin decays, update statuses and rewrite particle order""" | ||
| lhepart = [] | ||
| deletedIndexes = [] | ||
| for i in range(getattr(ev, "nLHEPart")): | ||
| testPart = HEPPart(ev,i) | ||
| testPart.mother1 = testPart.mother1 - sum([1*(testPart.mother1 > d) for d in deletedIndexes]) | ||
| testPart.mother2 = testPart.mother2 - sum([1*(testPart.mother2 > d) for d in deletedIndexes]) | ||
| if testPart.mother1 != 0: | ||
| if abs(lhepart[testPart.mother1-1].pdgId) in self.undoDecays: #If from something that decays after weighting just skip it and update particle indexes | ||
| deletedIndexes.append(i) | ||
| continue | ||
| if abs(testPart.pdgId) in self.undoDecays: | ||
| testPart.status = 1 | ||
| lhepart.append(testPart) | ||
|
|
||
| """ Now we can compute properly the number of particles at LHE """ | ||
| self.output.write(self.baseline1.format(nparts=len(lhepart), prid=self.prDict[str(ord(str(ev.LHE_ProcessID)))], weight=ev.LHEWeight_originalXWGTUP, scale=ev.LHE_Scale,aqed=ev.LHE_AlphaQED,aqcd=ev.LHE_AlphaS)) | ||
| """ And save each particle information """ | ||
| for part in lhepart: | ||
| self.output.write(part.printPart()) | ||
| self.output.write(self.baseender) | ||
|
|
||
| theP = LHEPrinter(args[1],"Events",args[2],undoDecays=[int(i) for i in args[4:]],chunkers=int(args[3]), prDict={str(i):i for i in range(1000)}) #PRDict by default set to not change anything as it is rare to use it | ||
| theP.insideLoop() |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters