How to merge several TH1Ds to a TH2D?

ROOT
1

Hi,all
how do we merge quantities of TH1D histograms to one TH2D histogram?

   thanks in advance!

   Regards!
2

You should loop on all the TH1D, get the bins contents and fill the TH2D accordingly

3

Thanks for reply~ :smiley:
I get it. Wonder if there’s any examples?
What if I fill the TH2D with root files,like in the attachment?

Canvas_1.jpg926×609 17.3 KB

4

That’s just 2 a double loop… get bin content on the TH1Ds and set bin content on the TH2D… nothing really complex

5

I get it, really thank you
best regard!