Square root - TH2F

[Pedro_Rossini]

Hi,

My question is: I have a bi-dimensional histogram and I need the square root of it, bin by bin. Is there any easy way to do this, or I need to use GetBinContent() of something like this?

Thank you.

[ksmith]

I think you will need to use GetBinContent():

for (int bin=0;bin<=hist->GetNcells();++bin) {
   hist->SetBinContent(bin, sqrt(hist->GetBinContent(bin));
}