scales (version 0.2.0)

div_gradient_pal: Diverging colour gradient (continous).

Description

Diverging colour gradient (continous).

Usage

div_gradient_pal(low = mnsl("10B 4/6"),
    mid = mnsl("N 8/0"), high = mnsl("10R 4/6"),
    space = "Lab")

Arguments

low

colour for low end of gradient.

mid

colour for mid point

high

colour for high end of gradient.

space

colour space in which to calculate gradient. "Lab" usually best unless gradient goes through white.

Examples

x <- seq(-1, 1, length = 100)
r <- sqrt(outer(x^2, x^2, "+"))
image(r, col = div_gradient_pal()(seq(0, 1, length = 12)))
image(r, col = div_gradient_pal()(seq(0, 1, length = 30)))
image(r, col = div_gradient_pal()(seq(0, 1, length = 100)))

library(munsell)
image(r, col = div_gradient_pal(low =
   mnsl(complement("10R 4/6", fix = TRUE)))(seq(0, 1, length = 100)))