invertLabelColor: Make High Contrast Label Colors

In aqp: Algorithms for Quantitative Pedology

Make High Contrast Label Colors

Description

Generate a vector of white or black label colors conditioned on a vector of colors to maximize label contrast.

Usage

invertLabelColor(colors, threshold = 0.65)

Arguments

colors	vector of colors
threshold	black | white threshold

Value

vector of label colors

Author(s)

D.E. Beaudette

Examples

# test with shades of grey
s <- seq(0, 1, by = 0.05)
cols <- grey(s)
soilPalette(cols, lab = as.character(s))

# test with 10YR x/3
m <- sprintf('10YR %s/3', 1:8)
cols <- parseMunsell(m)
soilPalette(cols, lab = m)

aqp documentation built on Oct. 19, 2024, 5:06 p.m.