gtable_add_space: Add row/column spacing.
Description
Adds width
space between the columns or height
space between
the rows.
Usage
gtable_add_col_space(x, width)gtable_add_row_space(x, height)
Arguments
width
a vector of units of length 1 or ncol - 1
height
a vector of units of length 1 or nrow - 1