How can I add a title to a tableGrob plot?

Question

I have a table, and I want to print a title above it:

t1 <- tableGrob(top_10_events_by_casualties, cols=c(\"EVTYPE\", \"casualties\"), rows=seq(1,10))
gri         


        

Answer 1

Another option is:

library(gridExtra)
grid.arrange(top="Iris dataset", tableGrob(head(iris)))

You still might want to do some tweaking with the padding.

Answer 2

Not sure what the problem was, but here is a working example:

library(grid)
library(gridExtra)
library(gtable)

t1 <- tableGrob(head(iris))
title <- textGrob("Title",gp=gpar(fontsize=50))
padding <- unit(5,"mm")

table <- gtable_add_rows(
     t1, 
     heights = grobHeight(title) + padding,
     pos = 0)
table <- gtable_add_grob(
    table, 
    title, 
    1, 1, 1, ncol(table))

grid.newpage()
grid.draw(table)