cet_pal: CET Perceptually Uniform Color Maps

Description Usage Arguments Value References Examples

View source: R/cetcolor.R

Description

Extract n RGB Hexadecimal colors from the perceptually uniform color maps developed by Peter Kovesi.

Usage

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cet_pal(n, name = "rainbow", alpha = 1)

Arguments

n

A numeric value greater than one indicating how many colors to use from the color map.

name

A string indicating the color map to use. There are 51 options available. Please see cet_color_maps() for more information. By default, the "rainbow" color scheme is used.

alpha

A numeric value between [0, 1] that indicates the level of transparency.

Value

A character vector containing the RGB hexadecimal representation of the requested color map.

References

Peter Kovesi. Good Colour Maps: How to Design Them. arXiv:1509.03700 cs.GR 2015

Examples

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# Grab 8 colors from rainbow or rainbow_bgyr_35-85_c73_n256
colors = cet_pal(8)
plot(1:8, 1:8, col=colors, pch=19, cex=3, xlab="", ylab="")

# Grab 25 colors from coolwarm or diverging_bwr_40-95_c42_n256
colors = cet_pal(25, name = "coolwarm")
plot(1:25, 1:25, col=colors, pch=19, cex=3, xlab="", ylab="")

cetcolor documentation built on July 13, 2018, 1:03 a.m.