TGraphErrors* graph = new TGraphErrors(10, x_values, y_values, x_errors, y_errors); graph->SetMarkerStyle(20); // Sets marker style to small dot
TGraphErrors* graph = new TGraphErrors(5, x_values, y_values, x_errors, y_errors); graph->SetMarkerStyle(21); // Sets marker style to small filled circleThis example creates a TGraphErrors object with 5 data points and sets the marker style of each point to a small filled circle. Overall, TGraphErrors SetMarkerStyle is a useful function in the ROOT package library for customizing the appearance of data points in TGraphErrors objects.