Hi Olivier, In the "Stat" box, you can display the following information (extracted from THistPainter::PaintStat): // The type of information printed in the histogram statistics box // can be selected via gStyle->SetOptStat(mode). // The parameter mode can be = iourmen (default = 0001111) // n = 1; name of histogram is printed // e = 1; number of entries printed // m = 1; mean value printed // r = 1; rms printed // u = 1; number of underflows printed // o = 1; number of overflows printed // i = 1; integral of bins printed // Example: gStyle->SetOptStat(11); // print only name of histogram and number of entries. To get the integral of bins in the range, do, eg: gStyle->SetOptStat(1111111); then use the slider on the axis (it works for 1-D and 2-D histograms). The PainStat function invokes TH1::Integral Rene Brun Olivier Meplan wrote: > > Hi Rooters! > a)I want to know if it is possible to obtain the number of entries of an > histogram for a given Range axis in the Stat box? Indeed when I make a > zoom (with mouse) the mean and RMS change according to the range axis > but the entry number is the total number of entries. > b) In the same spirit how can I make a TDialogCanvas for TH1 that can > call the TH1::Integral function? > Thank you > Olivier Meplan
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