aqp (version 2.1.0)

invertLabelColor: 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)

Value

vector of label colors

Arguments

colors

vector of colors

threshold

black | white threshold

Author

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)