Hi Paola, If you have a 2-D histogram TH2 *h2, you can set the range along z with: h2->SetMinimum(zmin) h2->SetMaximum(zmax) Rene Brun Lecca Paola wrote: > > Hi rooters ! > > Sorry for the trivial question. How can I change the range of Z axis in a > 2-d histogram ? > > SetRange, SetLimits do not work. > > Thanks a lot, > Paola.
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