Learn R Programming

SciViews (version 0.9-13.2)

colors: Various color palettes.

Description

Create vectors of `n` contiguous colors.

Usage

rwb_colors(n, alpha = 1, s = 0.9, v = 0.9)

rwb.colors(n, alpha = 1, s = 0.9, v = 0.9)

rwg_colors(n, alpha = 1, s = 0.9, v = 0.9)

rwg.colors(n, alpha = 1, s = 0.9, v = 0.9)

ryg_colors(n, alpha = 1, s = 0.9, v = 0.9)

ryg.colors(n, alpha = 1, s = 0.9, v = 0.9)

cwm_colors(n, alpha = 1, s = 0.9, v = 0.9)

cwm.colors(n, alpha = 1, s = 0.9, v = 0.9)

Arguments

n

The number of colors (>= 1) to be in the palette.

alpha

The alpha transparency, a number in \[0, 1\], see argument `alpha =` in [grDevices::hsv()].

s

The 'saturation' to be used to complete the HSV color descriptions.

v

The 'value' to use for the HSV color descriptions.

Details

`cwm_colors(s = 0.5, v = 1)` gives very similar colors to `cm.colors()`. `ryg_colors()` is similar to `rainbow(start = 0, end = 2/6)`. The `xxx_colors()` (tidyverse name-compatible) and `xxx.colors()`` (grDevices name-compatible) functions are synonyms.

See Also

[grDevices::cm.colors()], [grDevices::colorRampPalette()]

Examples

Run this code
# Draw color wheels with various palettes
opar <- par(mfrow = c(2, 2))
pie(rep(1, 11), col = cwm.colors(11), main = "Cyan - white - magenta")
pie(rep(1, 11), col = rwb.colors(11), main = "Red - white - blue")
pie(rep(1, 11), col = rwg.colors(11), main = "Red - white - green")
pie(rep(1, 11), col = ryg.colors(11), main = "Red - yellow - green")
par(opar)

Run the code above in your browser using DataLab