Hello ROOTers,
I’m a newcomer both to ROOT and C++, so forgive me if the following question is stupid.
I need to fill a TH2F with data from a 2D table and plot it along with the result of some calculations. I use the following code :
2Dfit->SetCellContent(k,l,PDF2D[k][l]);
in a loop to fill up the histogram, and
2Dfit->SetLineColor(2);
2Dfit->Draw(“SAME”);
to plot it.
PDF2D[k][l] is of type Float_t.
I get the following error messages, that I don’t understand.
Warning: Illegal numerical expression 2Dfit->SetCellContent(k,l,PDF2D[k][l])
Warning: Illegal numerical expression 2Dfit->SetLineColor(2)
Warning: Illegal numerical expression 2Dfit->Draw("SAME")
I’m using ROOT 3.04/02, but upgrading is not an option as it’s not locally installed on my machine.
Thanks.
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