I see, that's useful ... thank you very much.
cheers,
John Idarraga
UMontreal
Rene Brun wrote:
> Just to repeat what I said in my previous mail: what you do by hand, is
> done automatically by
> the auto binning algorithm and in addition you get nice values for the
> bin width and boundaries.
>
> Rene Brun
>
> John wrote:
>> OK, get it ... what I have done in the past is to maintain the values
>> that I am going to use to fill my histogram in a data structure (a
>> simple array for example). Then I figure my limits and proper binning.
>> It is only at the very end that I define the histogram and procced to
>> fill it up from the array. I don't know if you like this idea. If you
>> need an example let me know.
>>
>> Did you noticed that TH1F::Fill(Double_t x) returns -1 when you enter a
>> value out of range ? That helps you out detecting when you are filling
>> out of the defined range.
>>
>> cheers,
>>
>> John Idarraga
>> UMontreal
>>
>> Adrian Sevcenco wrote:
>>
>>> Àstrid Morreale wrote:
>>>
>>>> you could use a tree instead of a Histogram, I think I tree is more
>>>> flexible in that regard.
>>>>
>>> Very true ... this was my first thought and intention .. but i just
>>> wanted to ask about this ... it would simplify some quick things that
>>> sometime one have to do ...
>>> Thanks,
>>> Best regards,
>>> Adrian
>>>
>>>
>>>> Adrian Sevcenco ha scritto
>>>> <°> John wrote:
>>>> <°>> I don't understand your question yet ... when you define a
>>>> histogram,
>>>> <°>> you have a fixed number of bins already. When you say " ... keep
>>>> <°>> scaling the axis range automatically as it is filled ... " you
>>>> mean the
>>>> <°>> y axis ?
>>>> <°>>
>>>> <°>> regards,
>>>> <°>>
>>>> <°>> John Idarraga
>>>> <°>> UMontreal
>>>> <°> Well ... my wish is just to define a histogram with lets say 1 bin
>>>> with
>>>> <°> the bin width = 1 ... and if i fill with, lets say 15,
>>>> automatically the
>>>> <°> histogram will resize to have 16 bins with range extended up to
>>>> value 16...
>>>> <°> well... if its too far fetched i will just cope with what i have
>>>> ...
>>>> <°> Best regards,
>>>> <°> Adrian
>>>> <°>
>>>> <°>> Adrian Sevcenco wrote:
>>>> <°>>> Hi,
>>>> <°>>> Is there a possibility of setting up a histogram with a fixed
>>>> bin width
>>>> <°>>> that will keep scaling the axis range automatically as it is
>>>> filled?
>>>> <°>>> Thank you,
>>>> <°>>> Best regards,
>>>> <°>>> Adrian
>>>> <°>>>
>>>> <°>>>
>>>> <°>>
>>>> <°>
>>>>
>>>>
>>>> -Àstrid
>>>>
>>>> ===============================================
>>>> http://www.phenix.bnl.gov/~astrid/
>>>> ================================================
>>>> Àstrid Morreale
>>>> University Of California_at_Riverside
>>>> PHENIX SPIN Physics Group
>>>> http://www.phenix.bnl.gov/phenix/WWW/physics/spin/
>>>> E-mail: astrid_at_bnl.gov |Tel(BNL):631-344-7266
>>>> |Fax(BNL):631-344-3253
>>>> A_A
>>>> (-.-)
>>>> |-|
>>>> / \
>>>> | | __
>>>> | || | | \_/
>>>> \_||_/_/
>>>> ¯`·.¸.·´¯`·.¸.·´¯`·.><((((º>
>>>> ===============================================
>>>> Vidi ch'un s'affaccia quacchi fungi!!!!!
>>>>
>>
>>
>
Received on Tue Jul 08 2008 - 16:37:34 CEST