Examples:
The functions that return the colors are accessed using the
cmocean() function, where the first argument is the name of
the desired palette.
We can make a simple function to display the palette colors:
library(cmocean)
plot_cm <- function(name, n=256) {
z <- matrix(seq(0, 1, length.out=n))
image(z, col=cmocean(name)(n), axes=FALSE)
mtext(name, 3, adj=0)
}Below are examples of each of the cmocean palettes. Many
more examples are provided at https://matplotlib.org/cmocean/
palettes
Data examples:
par(mar=c(2, 2, 1, 1), cex=0.5)
image(volcano, col=cmocean('thermal')(256))
par(mar=c(2, 2, 1, 1), cex=0.5)
x <- y <- seq(-4*pi, 4*pi, len = 27)
r <- sqrt(outer(x^2, y^2, "+"))
image(z = z <- cos(r^2)*exp(-r/6), col = cmocean('haline')(256))