Axis range and same-option

Hello. I have a collections of TNtupleD.
The first one I draw like this:


The rest I draw with the option same:


The y-axis is then adjusted to the first histogram. I would like to tell the y-axis to adjust itself so all data fits when I am finished with the drawing. Is this possible?


I don’t think there is a way to automatically enlarge the scale when a plot which doesn’t fit into the existing one is ploted with option SAME. The only way I can think of is to define a scale big enough on the first plot.