dear ggplot2 help:
when I was plot a multi plot like this
but I've failed to align the x ticks as the left-top and the left-bottom plot
How could it be ?
I have tryed a script like grid.arrange(hist_top, empty, scatter, hist_right, ncol=2, nrow=2, widths=c(4,1), heights=c(1,4),align="v")
but it turns out Error: nrow * ncol >= n is not TRUE
thank you