Hi Patrice, In 2.22/05, GetMean or GetRMS compute these quantities from the bin contents when an axis range has been specified. For example when zooming with the mouse on a histogram or scatter-plot the mean value, rms, etc are recomputed from the current visible range. I have now implemented in my development version 2.22/06 the facility to also start from the bin contents in case the normal statistics filled by TH1::fill are not available (your case). Thanks for the remark. Rene Brun Patrice Lebrun wrote: > > Hi, > > I have an TH1F histogram filled only in using > SetBinContent method. Making that, the statistics > array is not computed. > I try to use TH1::GetStats(Stat_t *stats) or GetRMS() via > TAxis::SetRange but > without sucess. > Is there a simple way to get mean and RMS values of a such histogram ? > > -- > Patrice Lebrun > Institut de Physique Nucleaire de Lyon > Phone: 04 72 44 84 43 > Fax: 04 72 43 14 52 > >
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