How can I suppress the vertical gridlines in a ggplot2 plot while retaining the x-axis labels?

Question

This is a follow-on from this question, in which I was trying to suppress the vertical gridlines.

The solution, as provided by learnr, was to add scale_x_continuous(brea

Answer 1

You can do this editing the grob directly, try:

grid.remove(gPath("panel.grid.minor.x.polyline"),grep=T)
grid.remove(gPath("panel.grid.major.x.polyline"),grep=T) 

It will strip off your vertical lines. I'm just having problems to use it inside a function, because I guess that it only works when the ggplot is printed.

But, if that's not your case and you'll just need the graphic, than it will work.