I have two data files with almost the same time ranges (x axis). I want to plot them both one above another with exactly the same x range and scale. The problem is that I don't want to specify x range explicitly. I just want to take all the data and show in x-range that covers everything. How can I do it? And if the above is not feasible: Is it possible to draw one plot autoscaled and the other aligned horizontally to the first one (no mater whether anything goes off the plot)?