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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