View source: R/add-rows-cols.R
gtable_add_cols | R Documentation |
Insert new columns in a gtable and adjust the grob placement accordingly. If columns are added in the middle of a grob spanning multiple columns, the grob will continue to span them all. If a column is added to the left or right of a grob, the grob will not span the new column(s).
gtable_add_cols(x, widths, pos = -1)
x |
a |
widths |
a unit vector giving the widths of the new columns |
pos |
new columns will be added to the right of this position. Defaults
to adding col on right. |
A gtable with the new columns added.
Other gtable manipulation:
gtable_add_grob()
,
gtable_add_padding()
,
gtable_add_rows()
,
gtable_add_space
,
gtable_filter()
library(grid)
rect <- rectGrob(gp = gpar(fill = "#00000080"))
tab <- gtable(unit(rep(1, 3), "null"), unit(rep(1, 3), "null"))
tab <- gtable_add_grob(tab, rect, t = 1, l = 1, r = 3)
tab <- gtable_add_grob(tab, rect, t = 1, b = 3, l = 1)
tab <- gtable_add_grob(tab, rect, t = 1, b = 3, l = 3)
dim(tab)
plot(tab)
# Grobs will continue to span over new rows if added in the middle
tab2 <- gtable_add_cols(tab, unit(1, "null"), 1)
dim(tab2)
plot(tab2)
# But not when added to left (0) or right (-1, the default)
tab3 <- gtable_add_cols(tab, unit(1, "null"))
tab3 <- gtable_add_cols(tab3, unit(1, "null"), 0)
dim(tab3)
plot(tab3)
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