Re: histogram subtraction and mean

Hi Lorenzo,

I would say that ResetStats() should be the default. While it's clear in my example that the result is wrong, if working with a more symmetric distribution (for which error is not obvious) the naive user (like me) unaware of ResetStats might end up with a rather serious mistake in his/her analysis ..

I don't know what the best algorythm is but the default should to something reasonably .. and/or give a big fat warning ..

-Arthur

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On Tue, 1 Mar 2011, Lorenzo Moneta wrote:

> Hi,
> On Mar 1, 2011, at 6:25 PM, Holger Meyer wrote:
>
>> If you only have the binned moments, you can't go the other way. The
>> only possible change might be to add a function to the histogram classes
>> that does the work for you. Something like
>> TH1::SetMomentsFromBinCenters().
>
> we have such a function already, TH1::ResetStats(). By calling it, all the statistics is computed from the bin centers,
>
> Lorenzo
>
Received on Tue Mar 01 2011 - 21:43:58 CET