Re: Converting histograms ROOT->PAW

From: Nick van Eijndhoven (Nick@phys.uu.nl)
Date: Wed Sep 15 1999 - 09:34:41 MEST


Hi Stephan,
The easiest way I see is to make a small C++ macro to obtain the TH1F bin-data
and write them onto an ascii output file.
This ascii data can then be read-in in your PAW kumac.
However, I would advise you to try to perform your fit in C++ with ROOT;
you will then have a lot more goodies available for further analysis than
in PAW.

                                                   Cheers,
                                                    Nick. 


Stephan Hurling wrote:
> 
> Hello everybody,
> 
> I would like to use a program based on minuit, which would allow me to
> make a complex fit to my data. This fit cannot be reprogrammed in Root
> without spending a lot of time on this project. Unfortunately the
> interface of this programm works only with histograms in PAW format. So
> I'm searching for a way to convert just a single normal TH1F histogram
> into its PAW equivalent.
> 
> Can anybody discribe me, what I have to do, to put my TH1F histogram into
> PAW format? (Because I think it will be faster to go this way then
> rewriting the fit program in C++).
> 
> (I'm using Root from the beginning on and therefore I'm not very familiar
> with the HBOOK data format. In earlier letters of the Root Talk Digest,
> Rene said, one doesn't need to know the internals of the data formats to
> make this conversion. So it's no problem for me to develop code, if it is
> possible to make this running successfully within 2 days or so.)
> 
> Thanks and all the best,
> 
> Stephan
> 
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