Re: histogram subtraction and mean

From: Stefan Piperov <piperov_at_fnal.gov>
Date: Tue, 1 Mar 2011 22:46:30 +0200

Another possibility would be in addition to TH1::GetMean to have functions like TH1::GetBinMean and TH1::GetBinRMS which return the statistically correct values, and keep the current implementation of   TH1::GetMean and TH1::GetRMS returning the values calculated from non-binned data.

This way no changes will be necessary to existing codes.

Stefan.

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
>

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"Give a skeptic an inch... and he'll measure it." Received on Tue Mar 01 2011 - 21:46:37 CET