Can't open file TLorentzVector.h

magdy-ayad · February 19, 2020, 9:07am

excuse me, i am trying to compile and run a C++ code using root and i get this error "can’t open TLorentzVector.h " However the TLorentzVector.h header exist in the include library file ! what should i do to fix this problem ?

chiara_iannetta · February 19, 2020, 1:41pm

Can you append your code or directly the macro that you are using?

pcanal · February 20, 2020, 9:58pm

Maybe add
root-config --cflags
to you compile line so that the compiler knows where to find the ROOT header files?

Audrey_Spency · February 21, 2020, 7:33am

TRotation r; v.Transform(r); or v *= r; // Attention v=M*v

magdy-ayad · February 21, 2020, 2:25pm

i construct a four vector for di-leptons then i calculate the invariant mass of the system, but i get that error, the function as fellows:-

#include "TLorentzVector.h"
-
-
-
//=== Methode to calculate the mass ===
float ZprimeMuMu_FR_MiniAod::Mass(float Pt1,float Eta1,float Phi1,float En1,
				  float Pt2,float Eta2,float Phi2,float En2)
{
  float MuMuMass = 0.0;
  TLorentzVector Mu1;
  TLorentzVector Mu2;
  Mu1.SetPtEtaPhiM(Pt1,Eta1,Phi1,En1);
  Mu2.SetPtEtaPhiM(Pt2,Eta2,Phi2,En2);
  MuMuMass = (Mu1 + Mu2).M();
  return MuMuMass;
}

magdy-ayad · February 21, 2020, 2:26pm

excuse me, can you clarify it
where i have to compile this statment ?

magdy-ayad · February 21, 2020, 2:29pm

sorry, can you explain !

pcanal · February 21, 2020, 5:04pm

How to you “build/compile” your code? What is the step that is leading to an error? What is the exact wording of the error?

magdy-ayad · February 21, 2020, 5:19pm

Error : Can’t open TLorentzVector.h

Wile_E_Coyote · February 21, 2020, 5:39pm

You need to show the “command line” which you execute (the one that leads to this error).

magdy-ayad · February 22, 2020, 9:09am

[20] #include <----->
[21] #include <TLorentzVector.h>
[22] #include < ----->

the compiler stops and give an error at line 22 as the following screenshot

Wile_E_Coyote · February 22, 2020, 9:23am

Attach “ZprimeMuMu_FR_MiniAod.C” and “ZprimeMuMu_FR_MiniAod.h” for inspection.

BTW. There is no “compiler” involved. It is just the ROOT “interpreter”. Which ROOT version? Which operating system? What do you get from:

ls -al `root-config --incdir`/TLorentzVector.h

magdy-ayad · February 22, 2020, 9:41am

i use root 5.34
linux - ubuntu

Wile_E_Coyote · February 22, 2020, 9:46am

Which Ubuntu version exactly?
How did you install ROOT?

magdy-ayad · February 22, 2020, 9:47am

i get > no such file or directory

Wile_E_Coyote · February 22, 2020, 9:48am

What do you get from: root-config --incdir

magdy-ayad · February 22, 2020, 9:50am

/usr/include/root

Wile_E_Coyote · February 22, 2020, 9:55am

It seems to me that you use the very old Ubuntu provided ROOT version. You’d better get rid of it completely (e.g. execute “sudo apt-get purge root-system* root-plugin* libroot*” and afterwards check that the “/usr/lib/i386-linux-gnu/root5.34” and the “/usr/lib/x86_64-linux-gnu/root5.34” subdirectories disappeared completely).

The ROOT team provides ready-to-use binary distributions for some systems, including various Ubuntu versions, which you just need to download and unpack (see “Using binaries” therein).

magdy-ayad · February 22, 2020, 10:19am

when i excute the command to remove the root version wich i use i get :-
E: The package libndp0 needs to be reinstalled, but I can’t find an archive for it.

Wile_E_Coyote · February 22, 2020, 10:37am

Try something like:

sudo apt-get install --reinstall libndp0