ROOT Version: 6.14.06
Platform: Ubuntu16.04
Compiler: gcc630
Hi, I have questions about filling the tree.
As you can see in the picture below, I have a histogram with # of entries 4192.
I want the exact same Mean, Shape, Std, but want the number of entries to be increased by a factor of 2.
I know it is easy to use histogram’s Fill(data,weight), but I should know how I may do it in filling the tree level.
tree->FIll(2) results in error, and tree->SetWeight(2) has not changed anything in the number of entries. I appreciate your help.
Thank you!
couet
2
So I guess tree
is a TH1F/D ?
Something like that should divide the number of entries by 2:
tree->Fill(val, 0.5);
val
being the values you are histogramming .
When I fill the tree, I use tree->Fill() no argument…
I am not sure how to add weight in such case…
beojan
4
You need a weight branch that you set to the appropriate weight. The TBrowser histogram of a branch will always be unweighted.
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system
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