Table with rows of different colors with tableGrob

Question

I want to make a table with tableGrob function and I also want to complete rows put color but to specific rows. h.even.alpha, h.odd.alpha, v.even.alpha and v.odd.alpha are for 2 colors interspersed and not work in this case.

Thanks.

Answer 1

If you just want differing shades on the same colour (or alternating with white), you can use h.even.alpha and h.odd.alpha (and v.even.alpha/v.odd.alpha)

library(gridExtra)

grid.table(head(iris), h.even.alpha = 1, h.odd.alpha = 0, 
   v.even.alpha = 1, v.odd.alpha = 1)

If you want completely different colours, you can draw the table twice, with different settings for gpar.corefill (and the corresponding alpha values)

grid.newpage()
grid.table(head(iris), h.even.alpha = 1, h.odd.alpha = 0, 
   v.even.alpha = 1, v.odd.alpha = 1, 
   gpar.corefill = gpar(fill = 'red',col = 'white'))
 grid.table(head(iris), h.even.alpha = 0, h.odd.alpha = 1, 
   v.even.alpha = 1, v.odd.alpha = 1, 
   gpar.corefill = gpar(fill = 'purple',col = 'white'))