Sir, My *.dat file is shown below Experiment Onset Current Density 1 -3.574 31 2 -3.652 14 3 -3.662 15 4 -3.665 15 5 -3.663 14 6 -3.645 11 7 -3.644 10 8 -3.63 10 9 -3.653 10 10 -3.644 10 11 -3.649 11 12 -3.639 28 13 -3.642 9 14 -3.627 31 15 -3.643 21 16 -3.636 35 17 -3.628 24 18 -3.63 43 19 -3.638 25 Now I wish to plot a grouped bar chart with the left y-axis from [-3.65:-3.55] (2nd column) and right y-axis from [0:40] (3rd column) against 1st column being the x-axis. I initialized as set style data...