Cowplot - graphs different sizes

[freeta]

How do I make two graphs in cowplot (arranged side by side) different heights? I understand I can't use rel_height as this only works if the are on top of each other

[scottyd22]

As far as I know (and as you mention), rel_height only works with multiple rows. Another option could be the patchwork package. Example shown below.

library(tidyverse)
library(patchwork)

g1 = ggplot(mtcars, aes(x = cyl, y = disp)) + geom_point() + ggtitle('Plot 1')
g2 = ggplot(mtcars, aes(x = hp, y = wt)) + geom_point() + ggtitle('Plot 2')
          
((g1 / plot_spacer()) | g2) + plot_layout(ncol = 2)

Created on 2023-01-08 with reprex v2.0.2.9000

[freeta]

Unfortunately I am unable to use patchwork as one of my graphs is not a ggplot graph. Thank you anyway!

[nirgrahamuk]

you can nest plot_grid's

library(cowplot)
library(ggplot2)

g1 <- ggplot(mpg, aes(displ, hwy, colour = class)) +
  geom_point()

plot_grid(
  plot_grid(NULL, g1,
    ncol = 1, nrow = 2, rel_heights = c(1, 2)
  ), g1,
  nrow = 1,
  ncol = 2
)