Multiple TH2 into one


I am having in a file some TH2 plot named like

KEY: TH2F frac_0.1;3
KEY: TH2F frac_0.1;2
KEY: TH2F frac_0.1;1

So, my question is , how can I put all of these in one single canvas ? Each of the ;1 ;2 ;3 covers a different (x,y) area

Thanks in advance


It would be better if you named the various histogram with distinct names. Alternatively you can retrieve them via TDirectory::FindObject and plot them as usual.