R tableGrob change format of row

Question

I have some relatively simple code to create a table for printing to a PDF:

library(gridExtra)
df <- head(iris)
tableGrob(df, gp = gpar(fontsize = 8), row         


        

Answer 1

One option is to create a new table, and merge the two together,

g1 <- tableGrob(iris[1:4, 1:3], rows=NULL)
g2 <- tableGrob(iris[1, 1:3], rows=NULL, # can't have empty content
                cols=as.character(iris[4, 1:3])) # use 4th row as header

grid.newpage()
g <- rbind(g1[-nrow(g1), ], g2[1,])
grid.draw(g)