DeepAI AI Chat
Log In Sign Up

Coloring in R's Blind Spot

03/08/2023
by   Achim Zeileis, et al.
The R Foundation
0

Prior to version 4.0.0 R had a poor default color palette (using highly saturated red, green, blue, etc.) and provided very few alternative palettes, most of which also had poor perceptual properties (like the infamous rainbow palette). Starting with version 4.0.0 R gained a new and much improved default palette and, in addition, a selection of more than 100 well-established palettes are now available via the functions palette.colors() and hcl.colors(). The former provides a range of popular qualitative palettes for categorical data while the latter closely approximates many popular sequential and diverging palettes by systematically varying the perceptual hue, chroma, luminance (HCL) properties in the palette. This paper provides an overview of these new color functions and the palettes they provide along with advice about which palettes are appropriate for specific tasks, especially with regard to making them accessible to viewers with color vision deficiencies.

READ FULL TEXT

page 6

page 11

page 12

page 13

page 14

03/14/2019

colorspace: A Toolbox for Manipulating and Assessing Colors and Palettes

The R package colorspace provides a flexible toolbox for selecting indiv...
12/28/2020

Trivial colors in colorings of Kneser graphs

We show that any proper coloring of a Kneser graph KG_n,k with n-2k+2 co...
05/16/2018

Color naming reflects both perceptual structure and communicative need

Gibson et al. (2017) argued that color naming is shaped by patterns of c...
05/28/2022

Perceptually Optimized Color Selection for Visualization

We propose an approach, called the Equilibrium Distribution Model (EDM),...
02/12/2015

Simulation of Color Blindness and a Proposal for Using Google Glass as Color-correcting Tool

The human visual color response is driven by specialized cells called co...
07/05/2021

Accessible Color Cycles for Data Visualization

Color cycles, ordered sets of colors for data visualization, that balanc...
02/21/2022

Multilayer Random Sequential Adsorption

In this work, we present a variant of the multilayer random sequential a...