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Forum: Documentation and Examples
Re: None Xray-telescope running problem (Andres)
Date: 27 Sep, 2005
From: Giovanni Santin <Giovanni Santin>

Dear Andres

You do not need any additional external package for using GPS.

It is strange that your program crashes in the PrimaryGenerator class. The method GeneratePrimaries() is the simplest I could think of. I suggest you check your Geant4 installation: there might be a problem with your library installation (different version of Geant4, or the compiler you used). Are you using Linux or Windows?

An *optional* package for histogramming (AIDA compliant) will let you save the results as histograms and tuples (in HBOOK or XML or other formats).

Thanks to your message, I discovered that unfortunately a minor error has been recently introduced in the example: to compile without any analysis tool (G4ANALYSIS_USE not set) you have to add an #ifdef in XrayTelAnalysis.hh around the definition of the histogram variables:

#ifdef G4ANALYSIS_USE
  AIDA::IHistogram1D *h1;
  AIDA::IHistogram2D *h2;
  AIDA::IHistogram1D *h3;
  AIDA::IHistogram2D *h4;
  AIDA::ITuple * ntuple;
#endif

I suppose this is not the cause of your segfault either, as you could compile the example. I will correct this for the next release.

The macro opengl.mac also contains some old gps commands. They are obsolete, but still accepted by the code. So they cannot be the cause of your segfault. I will correct those as well.

Please let me know how it proceeds. Cheers, Giovanni

--
Giovanni Santin
Space Environments and Effects Analysis
ESA / ESTEC / TEC-EES
Tel: +31 (0)71 565 6267
Fax: +31 (0)71 565 4999

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1 None: Re: Xray-telescope running problem   (Andres - 28 Sep, 2005)
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