TTree problem in version 2.00.12

Alberto Baldisseri (baldiss@hep.saclay.cea.fr)
Fri, 23 Oct 1998 14:53:58 +0200

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Hi rooters,

I have a problem when I create a TTree in batch mode. My program
create and fill 10 events in a TTree, the result is stored in a TFile.
When I try to read the file (ntu.root) in root I get this curious output
:

root [0] TFile file("ntu.root")
root [1] .ls
TFile** ntu.root
TFile* ntu.root
KEY: TTree tree;2 Pixel Occupancy
KEY: TTree tree;2 Pixel Occupancy
KEY: TTree tree;2 Pixel Occupancy
KEY: TTree tree;2 Pixel Occupancy
KEY: TTree tree;2 Pixel Occupancy
KEY: TTree tree;2 Pixel Occupancy
KEY: TTree tree;2 Pixel Occupancy
KEY: TTree tree;2 Pixel Occupancy
KEY: TTree tree;2 Pixel Occupancy
KEY: TTree tree;1 Pixel Occupancy

root [2] tree.GetEntries()
(Stat_t)2.000000000000e+00

root [3] tree.Scan()
************************************************************************
* Row * run * na50burst * na50trig * pixev * burstsize *
************************************************************************
* 0 * 9 * 13 * 18 * 27 * 90 *
* 1 * 8 * 12 * 16 * 24 * 80 *
************************************************************************

When I try to draw a variable (tree.Draw("run")) I got only 2 entries,

rather than 10 that I put in the batch program. What is wrong ?

I am using version 2.00.12 for Linux egcs1.02. Here also the code I use and

the makefile. By the wai this code work with the version 2.00.08.

Thanks,

Alberto

--
+-------------------------------+------------------------------------+
| Alberto BALDISSERI            | Tel : (33-1) 69 08 93 33           |
| DAPNIA/SPhN, Bat 703 piece 42 | Fax : (33-1) 69 08 75 84           |
| CEA Saclay                    | E-mail : baldiss@hep.saclay.cea.fr |
| F 91191 Gif-sur-Yvette cedex  |                                    |
+-------------------------------+------------------------------------+






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Hi rooters,

I have a problem when I create a TTree  in batch mode. My program

create and fill 10 events in a TTree, the result is stored in a TFile.

When I try to read the file (ntu.root) in root I get this curious output
:

root [0] TFile file("ntu.root")
root [1] .ls
TFile**         ntu.root
 TFile*         ntu.root
  KEY: TTree    tree;2  Pixel Occupancy
  KEY: TTree    tree;2  Pixel Occupancy
  KEY: TTree    tree;2  Pixel Occupancy
  KEY: TTree    tree;2  Pixel Occupancy
  KEY: TTree    tree;2  Pixel Occupancy
  KEY: TTree    tree;2  Pixel Occupancy
  KEY: TTree    tree;2  Pixel Occupancy
  KEY: TTree    tree;2  Pixel Occupancy
  KEY: TTree    tree;2  Pixel Occupancy
  KEY: TTree    tree;1  Pixel Occupancy



root [2] tree.GetEntries()
(Stat_t)2.000000000000e+00



root [3] tree.Scan()      
************************************************************************
*    Row   *       run * na50burst *  na50trig *     pixev * burstsize *
************************************************************************
*        0 *         9 *        13 *        18 *        27 *        90 *
*        1 *         8 *        12 *        16 *        24 *        80 *
************************************************************************




When I try to draw a variable (tree.Draw("run")) I got only 2 entries,



rather than 10 that I put in the batch program. What is wrong ?



I am using version 2.00.12 for Linux egcs1.02. Here also the code I use and



the makefile. By the wai this code work with the version 2.00.08.






Thanks,






Alberto







-- 
+-------------------------------+------------------------------------+
| Alberto BALDISSERI            | Tel : (33-1) 69 08 93 33           | 
| DAPNIA/SPhN, Bat 703 piece 42 | Fax : (33-1) 69 08 75 84           |
| CEA Saclay                    | E-mail : baldiss@hep.saclay.cea.fr |
| F 91191 Gif-sur-Yvette cedex  |                                    |
+-------------------------------+------------------------------------+

 

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CXX = g++
CXXFLAGS = -g -I$(ROOTSYS)/include
ROOTLIBS      = -L$(ROOTSYS)/lib -lNew -lBase -lCint -lClib -lCont -lFunc \
                -lGraf -lGraf3d -lHist -lHtml -lMatrix -lMeta -lMinuit -lNet \
                -lPostscript -lProof -lTree -lUnix -lZip -lm -ldl -rdynamic

all :  pixoff 

pixoff : pixoff.cxx
	$(CXX) $(CXXFLAGS) pixoff.cxx $(ROOTLIBS) -o $@










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/*

  NA50 pixel Offline data reading

  A. Baldisseri : March 98

*/
#include 
#include    
#include   /* include hbook.h */

_PixBurst Burst;
int RunNumber = 1;

int  main()
{
  int i = 10;
  _PixBurstRec burst;
  Burst = &burst;

  Burst->header.na50burst    = 0;
  Burst->header.na50triggers = 2;
  Burst->header.pixevents    = 3;
  Burst->header.burstsize    = 4;


  /* ROOT ntu book */
  
	  
  /* ROOT ntu fill */
  while(i--)
    ntu_fill__Fv();

  /* ROOT ntu end */
  ntu_end__Fv();

} /* end of main */








 

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