[Gate-users] Read files .root, .mac, OpenGLX problem

[Mahdjoub Hamdi]

Dear Gaters

    Hear I'm again, I apologize  if i send to you  lot of messages, I am 
a beginner with *Gate* I lost about a 2 monthwith the installation and 
the validation of my installation, I reinstalled several times geant4 
gate and even I changed the version of linux ubuntu (8.10 4.10 ver ver 
11.10).

  No one in my department has experienced with gate,  the archive  of 
the mailing list helpful but not in the of the time, So I decided to 
start sharing my encountered issues with my friends in the Gate's users 
mailing  list, as beginning I have 3 Questions:

1 -  I executed the CT example  (classic) in Gate by coping the macro in 
in the files *acquisition.mac*, *digitizer.mac* and so on ... in the 
Gate environment (because I can not execute directly the file 
*benchmarkCT.mac*),  I Obtained a 3 data output files 
*benchmarkCT.root*, *benchmarkCT_000.dat* and *benchmarkCT_001.dat*.so 
my my question is how to rid or to extract the information from this files.

2 - When i try to draw a volume with OGLSX  viewer  by executing the 
next commend line*/gate/cylindricalPET/vis/forceWireframe*regarding to 
following macro**:

# S Y S T E M

  /gate/world/daughters/name cylindricalPET
  /gate/world/daughters/insert cylinder
  /gate/cylindricalPET/setMaterial Water
  /gate/cylindricalPET/geometry/setRmax 100 mm
  /gate/cylindricalPET/geometry/setRmin 86 mm
  /gate/cylindricalPET/geometry/setHeight 18 mm
  /gate/cylindricalPET/vis/forceWireframe
  /vis/viewer/zoom 3

I obtain the following warning or an error message and no visualization 
is obtained:
G4PhysicalVolumeModel::Validate() called.> > Volume of the same name and 
copy number ("world_phys", copy 0) still exists and is being used.> > 
WARNING: This does not necessarily guarantee it's the same> > volume you 
originally specified in /vis/scene/add/.>

3 - How may i use or integrate an other viewer instead the OpenGLX 
viewer, need - it - re-installation of Gate to integrate anotherviewer tool?

Thanks in advance for any kind of information.

best regard,

Mahdjoub Hamdi, PhD candidate,
University of Mostaganem,
Electrical engineering  department.