Problem in adding histogram

Newbie
,
1

Hi,

I want to add 3 histogarms (which are generated from a function). Unfortunately i get the following error :

Info in <TH1D::Add>: Attempt to add histograms with different number of bins - trying to use TH1::Merge
Error in <Merge>: Cannot merge histograms - limits are inconsistent:
 first: h1 (92, 44.000000, 136.000000), second: Func (100, 44.000000, 136.000000)"

here I attach my macro:
check1.C (1.7 KB)

2

h1 has 92 bins instead of 100. Replace:

   TH1D*h1 = new TH1D("h1","h1",92,44,136);

by

   auto h1 = new TH1D("h1","h1",100,44,136);
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3

Or in the case you want to use 92 bins, you have to use set the number of point of your function to 92 with SetNpx()

f12_A1_i->SetNpx(92);

Then when you will use GetHistogram, the returned histogram will have 92 bins.

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