Title: CET Perceptually Uniform Colour Maps
Version: 0.2.0
Description: Collection of perceptually uniform colour maps made by Peter Kovesi (2015) "Good Colour Maps: How to Design Them" <doi:10.48550/arXiv.1509.03700> at the Centre for Exploration Targeting (CET).
Depends: R (≥ 3.3.0)
License: CC BY-SA 4.0
URL: https://github.com/coatless/cetcolor, http://thecoatlessprofessor.com/projects/cetcolor/, http://peterkovesi.com/projects/colourmaps/
BugReports: https://github.com/coatless/cetcolor/issues
Encoding: UTF-8
LazyData: true
Suggests: knitr, rmarkdown
VignetteBuilder: knitr
RoxygenNote: 6.0.1
NeedsCompilation: no
Packaged: 2018-07-10 15:25:40 UTC; jjb
Author: James Balamuta ORCID iD [aut, cre, cph], Peter Kovesi [cph] (Creator of CET Color Maps)
Maintainer: James Balamuta <balamut2@illinois.edu>
Repository: CRAN
Date/Publication: 2018-07-10 16:30:03 UTC

cetcolor: CET Perceptually Uniform Colour Maps

Description

Collection of perceptually uniform colour maps made by Peter Kovesi (2015) "Good Colour Maps: How to Design Them" <arXiv:1509.03700> at the Centre for Exploration Targeting (CET).

Details

56 Colour maps are available as of May 2018

Author(s)

Maintainer: James Balamuta balamut2@illinois.edu (0000-0003-2826-8458) [copyright holder]

Other contributors:

See Also

Useful links:

RGB Value Map of the CET Perceptually Uniform Colour Maps

Description

A list of data.frames that have the RGB values of the CET Perceptually Uniform Colour Maps as released in May 2018 with the original maps released in June 2016.

Usage

cet_color_maps

Format

A list with each entry coded as a data frame with 256 observations and 3 variables:

The following color maps have been included:

Cyclic Colour Maps

Diverging Colour Maps

Isoluminant Colour Maps

Linear Colour Maps

Rainbow Colour Maps

Colour Blind

Source

http://peterkovesi.com/projects/colourmaps/CETperceptual_csv_0_1.zip

References

http://peterkovesi.com/projects/colourmaps/

CET Perceptually Uniform Color Maps

Description

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

Usage

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

# 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="")

Display CET Color Maps

Description

Offers a variety of ways to preview CET Color Maps.

Usage

display_cet_pal(n = 256, name = "rainbow", alpha = 1)

display_cet_attribute(n = 256, attribute = "rainbow", alpha = 1)

display_cet_all(n = 256, 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.

attribute

A character string indicating the attribute. Accepted values are: "rainbow" (Default), "linear", "diverging", "cyclic" "isoluminant", and "colorblind".