[Rivet] YODA write out

[David Bjergaard]

Why can't there be custom 1D booking for ratios that is implemented in the software that writes out name_num and name_den? Then users can yodamerge to their hearts content. 

    David

> On Jan 20, 2016, at 11:56 AM, Holger Schulz <holger.schulz at durham.ac.uk> wrote:
> 
>> On 20/01/16 16:51, David Grellscheid wrote:
>> Hi Holger,
>> 
>> Is your question why the result of dividing two histos is a scatter rather than a histogram?
>> It gets hard to define many of the properties that a histogram / bin should have after the division.
> 
> Sorry, I was unprecise.
> 
> Specifically, what people want to do (for observables that are defined as ratios)
> is to do some yodamerge stuff for the denominator and separately some yodamerge
> stuff for the numerator. For instance adding background and signal contributions.
> That requires output in the form of HISTO1D.
> 
> I.e. do we have/ can we add a switch which disables the divide call in analyses and
> instead writes out the histo1D guys of the numerator and the denominator such
> that one can do arbitrary histogram manipulation afterwards?
> 
> Cheers,
> Holger
> 
>>   David
>> 
>> 
>> 
>>> On 20 January 2016 13:47:20 GMT+00:00, Holger Schulz<holger.schulz at durham.ac.uk>  wrote:
>>>> On 20/01/16 13:44, Andy Buckley wrote:
>>>> Er, it already does. If you call bookHisto1D, a Histo1D will be
>>>> written out. Do you have a counterexample?
>>> Ah sorry I forgot one important bit of information and that is the call
>>> 
>>> of divide in finalize.
>>> 
>>> Sorry, overworked already ...
>>> 
>>> Holger
>>>> A
>>>> 
>>>> On 20 Jan 2016 13:30, "Holger Schulz"<holger.schulz at durham.ac.uk
>>>> <mailto:holger.schulz at durham.ac.uk>>  wrote:
>>>> 
>>>>     Hi,
>>>> 
>>>>     is there a way to have rivet write out YODA Histo1D at the end of
>>>>     a run
>>>>     rather than Scatter2D? (I think the experimental --histo-interval
>>>>     kind of does
>>>>     that, right?)
>>>> 
>>>>     I am asking because of post processing concerns brought forward
>>> by
>>>>     some
>>>>     people at IPPP when using yodamerge.
>>>> 
>>>>     Cheers,
>>>>     Holger
> 
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