Remove white space between plots and table in grid.arrange

Question

I would like to remove the large spacing that is inserted by default between the plots and the table in a grid.arrange, as shown in the MWE hereafter:

requir         


        

Answer 1

grid.arrange() by default allocates equal space for each cell. If you want a tight fit around a specific grob, you should query its size, and pass it explicitly,

library(grid)
th <- sum(table$heights) # note: grobHeights.gtable is inaccurate
grid.arrange(plots, table, heights = unit.c(unit(1, "null"), th))

Answer 2

I actually found the parameter ruling the spacing between grobs: heights, see line below

grid.arrange(plots, table, heights=c(5,1))