Re: fixed bin width

Although your request could be implemented, it would have several side-effects in reality,
the main one being possible memory overflows because to accommodate a large under/overflow many bins could be required. Did you experience any problem with the existing automatic binning? Note that with the auto binning algorithm nice values are computed for the bin width and also the origin. And it is teh algorithm used by TTree::Draw too.

Rene Brun

Adrian Sevcenco wrote:
> Rene Brun wrote:
>> Yes, use automatic binning
>> TH1F *h = new TH1F("h","title",100,0,0);
> Thanks for the answer. but ... wouldn't this give me
> an histogram with a fixed number of bins ? that will have their widths
> increased as it is filled?
> In principle i was asking about something that will scale the axis
> range (and number of bins) without modifying the bin width.
> I ask about this because i would like to have a histogram on which i
> only declare the bin width and that afterwards grow (axis and number
> of bins) as i fill it.
> Thank you,
> Best regards,
> Adrian
>
>> Setting the upper limit <= lower limit will trigger the automatic
>> binning (true for 1,2 and 3 dimensions)
>>
>> Rene Brun
>>
>> 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
>
Received on Tue Jul 08 2008 - 16:32:04 CEST