R: exclude colorbar from lattice heatmap

Question

I am using the lattice package to plot heatmaps. For some plots I would like to exclude the colorbar that is printed automatically next to the plot. Unfortunately, I could not find an option to hide it. Is there an easy way to achieve this?

Answer 1

Assuming you are referring to levelplot from lattice , colorkeys can easily be disabled by specifying colorkey = FALSE . In fact, this is done in the first example of ?levelplot .

x <- seq(pi/4, 5 * pi, length.out = 100)
y <- seq(pi/4, 5 * pi, length.out = 100)
r <- as.vector(sqrt(outer(x^2, y^2, "+")))
grid <- expand.grid(x=x, y=y)
grid$z <- cos(r^2) * exp(-r/(pi^3))
levelplot(z ~ x * y, grid, cuts = 50, scales = list(log = "e"), xlab = "",
          ylab = "", main = "Weird Function", sub = "with log scales",
          colorkey = FALSE, region = TRUE)