How to control ggplot's plotting area proportions instead of fitting them to devices in R?

Question

By default, each plot in ggplot fits its device.

That\'s not always desirable. For instance, one may need to make tiles in geom_tile to be

Answer 1

Here's an easy device to treat your plot with respect,

library(ggplot2)
p = qplot(1:10, (1:10)^3)
g = ggplotGrob(p)
g$respect = TRUE
library(grid)
grid.draw(g)