anyway to adjust the figure with desired position

Hi:

I plotted a figure but I want to adjust the position of the figure with the desired region(red rectangle shown below).

I tried to adjust the f.Position but it does not work, for example, when I change the first two parameters of the figure Position (left and bottom), the entire figure moves instead of only the left/bottom edge.

The target I want do this, is to adjust the figure then print them into computer. yes, I can print the entire figure and use 'crop' function to crop it, but I think print the desired region directly save some workload.

Thanks!

Yu