How to set a cumulative histogram's y-axis to a percentage scale instead of the number of bins

Newbie
,
1

My code is the following:

{
TCanvas *c1 = new TCanvas();
h = new TH1D ("h", "Distanza Angolare; Distanza Angolare (deg); Conteggi; ", 100, 0, 5); 
 
fstream file;
file.open("Dist_Ang.txt", ios::in);

double value;

while(1)
{
    file >> value;
    h->Fill(value); 
    if(file.eof()) break;
}

file.close();

TH1* hc = h->GetCumulative();
h->SetFillColor(kBlue);
hc->Draw();
       
}

How do I make it so that the y axis gives me the percentage of points instead of the number of points?

2

Try: hc->Scale(100. / h->Integral());