TGraph *graph = new TGraph(); graph->SetLineStyle(1);
TGraph *graph = new TGraph(); graph->SetLineStyle(2);
TGraph *graph = new TGraph(); graph->SetLineStyle(3);
TGraph *graph = new TGraph(); graph->SetLineStyle(4);These code examples demonstrate how to set the line style of a TGraph object using the SetLineStyle function. By passing an integer argument to the function, we can set the line style to solid, dashed, dotted, or dash-dotted. The ROOT package library contains the TGraph class that provides this function.