I want to plot a bar graph like below using pgfplot:
This is a hand drawn pic though. I want to show the change of r1 and r2 for a particular variable a. For a=5, r1 is measured at t1 and t2, also r2 is measured at t1 and t2. How can I show this in one plot? I know I can do this in two plots very smoothly. But I dont have enough space in my paper to plot two graphs. Any idea please.
