I would like to plot the top + and top – values in ggplot2 but the graph has a lot of white space in the middle where no y-axis values correspond. Is there a way to remove that or is there a different way to represent this data? I am not able to figure this out. Any help would be appreciated.

Thank you in advance. enter image description here

I tried scale_x_continous and setting limits and selecting x-axis values but that only changes the markers.