Correlation between two variables

ROOT
1

Hi every one.

I want to find the correlation between two variables.

h_hist_1[8] and
h_hist_2[8].

What I tried is :

TH2D *h_hist1hist2[8];
for (int i = 0; i < 8; i++)
{
h_hist1hist2[i] = new TH2D(Form(“h_hist1hist2_%d”, i), " " , 100, 0, 100, 100, 0, 100);
}

for (int i = 0; i < 8; i++)
{
h_hist1hist2[i]->Fill(A1, A2);
}

Please have a look and correct me .
Thank you.

2

Hi,

This is the first error you can not use the dash in the name of an histogram (or array of histograms)

This is the second error that I see, you could not fill an histogram using other histogram.
You have fill it the TH2D with the data you used to create the other 16 histograms

3

Thank you for your time and your kind reply .

4

If you can give us more detail, I can try to be more helpful

5

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