map_colors-methods: map data values to a set of colors

In bbuchsbaum/colorplane: Basic S4 Classes and Methods for Mapping Between Numeric Values and Colors

map data values to a set of colors

Description

instantiate a vector of colors from a ColorPlane specification.

Usage

map_colors(x, ...)

## S4 method for signature 'ConstantColorPlane'
map_colors(x)

## S4 method for signature 'HexColorPlane'
map_colors(x)

## S4 method for signature 'DiscreteColorPlane'
map_colors(x, values, ...)

## S4 method for signature 'IntensityColorPlane'
map_colors(x, alpha = 1, threshold = NULL, irange = NULL)

Arguments

x	the object to map over
...	extra args
values	the values to map to colors via the discrete lookup table
alpha	alpha multiplier from 0 to 1.
threshold	two-sided threshold as a 2-element vector, e.g. 'threshold=c(-3,3)' indicating two-sided transparency thresholds.
irange	the intensity range defining min and max of scale.

Value

a HexColorPlane instance containing the mapped colors

Examples

cp <- IntensityColorPlane(seq(1,100), cols=rainbow(25))
cl <- map_colors(cp, irange=c(0,50))
stopifnot(cl@clr[50] == rainbow(25)[25])

bbuchsbaum/colorplane documentation built on March 12, 2023, 8:11 a.m.