|Message: Re: A .root file||Not Logged In (login)|
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Sigh. No, CERN-ROOT is not the only way to produce a .root file. You can do that too by using an OpenScientist osc_batch kit. (A kit which is much more lighter to install than CERN-ROOT). (An osc_batch kit uses the Rio package to handle the IO at the .root format). See : http://OpenScientist.lal.in2p3.fr for more.
And you can read the .root file produced by an osc_batch kit with CERN-ROOT but also with the osc-plot program coming with an OpenScientist / osc_vis kit and also with jas (see http://jas.freehep.org/jas3 ). The product you choose depend of your philosophy in life (as choosing between Mac and Windows, an iPhone or an Android. This kind of thing).
Else, what may be not clear is that the exrdm example have in fact the code to do the histograming through the AIDA interfaces (what is promoted in G4) but also with... "straight CERN-ROOT". Each code is protected / enabled by the cpp macros G4ANALYSIS_USE and G4ANALYSIS_USE_ROOT. Then you .root file may have been produced or by CERN-ROOT or by some osc_batch kit around. To see what really happened in your case you have to dig a bit to know what is on your machine and which cpp macro had been enabled during your build.
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