InterpolateColorFun: Linear interpolation within a colorspace::color palette

In colorpatch: Optimized Rendering of Fold Changes and Confidence Values

Description

This function can be used together with ggplot2 for mapping values onto colorspace::color palettes. The color is then coerced with coerce.fun.

Usage

InterpolateColorFun(pal, xmin = -1, xmax = +1,
  coerce.fun = colorspace::hex)

Arguments

pal	The input palette (must be of class colorspace::color)
xmin	minimum of the numeric range to be mapped onto pal
xmax	maximum of the numeric range to be mapped onto pal
coerce.fun	each color will be coerced by this function (defaults to colorspace::hex())

Value

A function mapping a numeric value value onto a color value.

Examples

library(colorspace)
library(colorpatch)
data("OptimGreenRedLAB")
fn <- InterpolateColorFun(OptimGreenRedLAB)
cols <- fn(seq(-1, 1, by = 0.1))
specplot(cols)

colorpatch documentation built on May 1, 2019, 10:28 p.m.