How to merge certain histograms within the same root file?

[suman]

I have a root file containing 10 histogram [say bin as 0-5,5-10…55-60], i want to merge only 4 histogram out of them [say bin as 0-5,5-10,10-15.15-20]

How to do that?

Thanx in advance

[moneta]

Hi,

You can use TH1::Merge(list) where in the list you add only the histogram you want to merge

Lorenzo

[suman]

@moneta and for other histograms should i write it separately or in the same program