Re: [ROOT] Copy branch pb

From: Rene Brun (Rene.Brun@cern.ch)
Date: Thu Oct 03 2002 - 16:18:16 MEST


Hi Sebastien,

I can run your simple example without problems using the PRO
version 3.03/09. I believe that the ouput is correct.
See the result of TTree::Print below.
I suggest to try with version 3.03/09 and let me know.

Rene Brun

root [0] TFile f("out.root")
root [1] .ls
TFile**         out.root
 TFile*         out.root
  KEY: TTree    Global;1        Global
root [2] Global.Print()
******************************************************************************
*Tree    :Global    : Global
*
*Entries :       13 : Total =          126477 bytes  File  Size =
66252 *
*        :          : Tree compression factor =   1.37
*
******************************************************************************
*Br    0 :GTRACK    : ngtrk/I:chi_2[ngtrk]/F:dca0[ngtrk]/F:dca1[ngtrk]/F:
*
*         |
dcaerr0[ngtrk]/F:dcaerr1[ngtrk]/F:dedx[ngtrk]/F:dphidir[ngtrk]/F:*
*         | dpq[ngtrk]/F:dpt[ngtrk]/F:dqoverpt[ngtrk]/F:drmin[ngtrk]/F:
*
*         | drp[ngtrk]/F:drq[ngtrk]/F:drsig[ngtrk]/F:drt[ngtrk]/F:
*
*         | drz[ngtrk]/F:dtanl[ngtrk]/F:dtq[ngtrk]/F:dzca[ngtrk]/F:
*
*         | dzp[ngtrk]/F:dzq[ngtrk]/F:dzt[ngtrk]/F:ededx[ngtrk]/F:
*
*         | gtindex[ngtrk]/I:mcidx[ngtrk]/I:ncft[ngtrk]/I:nsmt[ngtrk]/I:
*
*         | phidir[ngtrk]/F:qoverpt[ngtrk]/F:rc[ngtrk]/F:rsig[ngtrk]/F:
*
*         |
tanl[ngtrk]/F:tanth[ngtrk]/F:xc[ngtrk]/F:yc[ngtrk]/F:zc[ngtrk]/F:*
*         | zca[ngtrk]/F
*
*Entries :       13 : Total  Size=      54697 bytes  File Size  =
26962 *
*Baskets :        1 : Basket Size=      32000 bytes  Compression=   1.20
*
*............................................................................*
*Br    1 :Gtr401atDCA : ntrk401DCA/I:chsq[ntrk401DCA]/F:cid/I:
*
*         | err00[ntrk401DCA]/F:err10[ntrk401DCA]/F:err11[ntrk401DCA]/F:
*
*         | err20[ntrk401DCA]/F:err21[ntrk401DCA]/F:err22[ntrk401DCA]/F:
*
*         | err30[ntrk401DCA]/F:err31[ntrk401DCA]/F:err32[ntrk401DCA]/F:
*
*         | err33[ntrk401DCA]/F:err40[ntrk401DCA]/F:err41[ntrk401DCA]/F:
*
*         | err42[ntrk401DCA]/F:err43[ntrk401DCA]/F:err44[ntrk401DCA]/F:
*
*         | hmaskw1[ntrk401DCA]/I:hmaskw2[ntrk401DCA]/I:
*
*         | hmaskw3[ntrk401DCA]/I:nhit[ntrk401DCA]/I:nmeas[ntrk401DCA]/I:
*
*         | par0[ntrk401DCA]/F:par1[ntrk401DCA]/F:par2[ntrk401DCA]/F:
*
*         | par3[ntrk401DCA]/F:par4[ntrk401DCA]/F:parsrf/F
*
*Entries :       13 : Total  Size=      71262 bytes  File Size  =
18746 *
*Baskets :        1 : Basket Size=      32000 bytes  Compression=   1.61
*
*............................................................................*


On Thu, 3 Oct 2002, Sebastien Greder wrote:

> Hi Rooters,
> 
> I'm encountering some problems while copying a tree.
> I put an examplein :
> 
> /afs/in2p3.fr/home/g/greder/public/testnew.tar.gz
> 
> To sum up , I want to do som selection on events in a tree.
> Also I want to remove some branches I don't use. 
> I wrote a small macro to do this but there's a problem when copying one
> branch : Gtr401atDCA, it's completely empty in the output except for one
> variable ntrk401DCA. All the other branches are correctly copyed.
> 
> I don't know if it's a branch pb, I don't think my code does something
> wrong since the other branches are ok, but I don't know how to check the
> branch "state"
> 
> sebastien.
> 
> pd : to use the prog :
> 
> root
> .L teststream.C
> main("out.root") ==> output file.
> 
> I'm running on RH 6.4 with version 03.02.07 compiled with gcc 2.91
> 
> 
> 
> 



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