Useful Macros

Truth Tree Viewer

This archive includes dsp.C, dsp.h, and pdgid.h. You need a AANT file to browse a tree of truth particles event by event. It also supports AANT which does not contain vectors like AANT in v12.

root[0] .L dsp.C
root[1] dsp aho("AANT_File_Name");     <--- You can use wild card like "hoge_*.root" as the file name.  
root[2] aho.ShowparticleList(4);       <--- shows a normal list of truth muons for event 4(5th event).
                                            Note that event number starts from 0.
                                            Top particles are displayed in magenta.
                                            The status is displayed as 'P' in yellow if it is 9999. 
root[3] aho.ShowParticleList(1,10);    <--- shows event 1 to 10. 
root[4] aho.ShowTreeFromPDG(13);       <--- shows a decay tree which begins from the given particle(13==muon) over all events. 
root[5] aho.ShowTreeFromPDG(13,2);     <--- shows muon trees for event 2. 
root[6] aho.ShowTreeFromPDG(13,1,10);  <--- shows muon trees event 1 to 10. 
root[7] aho.ShowDecayFromTop(1);       <--- shows a tree from the grandest mother particle. 
                                            The 1st particle(Type[0]) is not always the top of the family. 
root[8] aho.ShowDecayFromTop(2,20);    <--- shows trees event 2 to 20. 
root[9] aho.SetColor(13, 1);  <--- sets the color of muon(PDGID==13) to red.
                                   0:black, 1:red, 2:green, 3:yellow, 4:blue, 5:magenta, 6:cyan, 7:white 
root[10] aho.EnableColor(1);  <--- enables color. 0:disable, deault=1 
root[11] aho.SetShowStat(1);  <--- shows status code. 0:reset, default=1 
root[12] aho.SetShowType(1);  <--- shows type(PDGID). 0:reset, default=1 
root[13] aho.SetShowMoth(1);  <--- shows mother index. 0:reset, default=1 
root[14] aho.SetShowPt(1);    <--- shows pT. 0:reset, default=0 
root[15] aho.SetShowEta(1);   <--- shows eta. 0:reset, default=0 
root[16] aho.SetShowPhi(1);   <--- shows phi. 0:reset, default=0 

PDG ID is seen at PDG site.

-- KenjiOzone - 07 Nov 2008

  • dsp.tgz: Truth Tree Viewer macro in root
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Topic revision: r2 - 2008-11-11 - KenjiOzone
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