[Rivet] YODA write out

[Holger Schulz]

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
>>>