But since it's a bit hard to go back and forth reading the help text while plotting things I've decided to add a single page so that it's possible to read the helping text while plotting the Ntuple. C Draw a smooth curve. S Superimpose plot on top of existing picture. B Bar chart format. L Connect channels contents by a line.
P Draw the current polymarker at each channel or cell.
U Update channels modified since last call. In this example, X and Y are the names of the variables 1 and 2 respectively. Expression 1 is any numerical expression of the Ntuple variables. No selection is applied. It returns the weight of the event.