Re: root2h

From: Valery Fine (fine@mail.cern.ch)
Date: Sat Sep 20 1997 - 21:38:10 MEST


On 19 Sep 97 at 15:18, Andrew Sonnenschein wrote:


> 
> Does anyone have a program that is the reverse of h2root? This would
> change some subset of possible root files into hbook ntuples,
> histograms, etc. 


  Since ROOT FUNCTIONALITY is a SUPER set of HBOOK ones there is 
no back common way (even in theory) unless one improves HBOOK.

  But since C++ allows to call any FORTRAN code that you may write 
our own C++ class to wrap HBOOK Fortran calls taking in account the 
properties of your OWN histogram objects. It is assumed to extract 
some bins information from the ROOT histogram objects and call 
HBOOK to create and fill the HBOOK histograms. Apparently some info 
will be lost (one goes from SUPER set to SUB set) this way but it 
would up to you to judge (it would be your OWN class not ROOT one).

  Anyway it would be done (probably,try) for your own objects not 
just for ANY ROOT histogram objects. 

  With my best regards,
                         Valery
Dr. Valeri Faine (Valery Fine)
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