How can i use TF1::GetHistogram() without drawing the function (using TF1::Draw()) ? If i do not use draw() i get the following error: root [13] TF1 *func = new TF1 ( "func" , "x" , 0 , 1 ) ; root [14] TH1D *histo = func -> GetHistogram ( ) ; root [15] histo -> Draw ( ) ; Error: illegal pointer to class object histo 0x0 148 FILE:(tmpfile) LINE:1 *** Interpreter error recovered *** Alessio
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