spectrumcolors: Spectrum colour palette
Description
Generates smooth rainbow color scale from red to purple, similar to rainbow, but with improved smoothness
Usage
spectrumcolors(n, alpha = 1, rev = FALSE)
Arguments
n
integer number of colors in the scale
alpha
alpha transparency value (0=fully transparent, 1=fully opaque)
rev
logical flag indicating whether the ordering of the colors should be reversed
Value
Returns an n-vector of RGB colour strings.