interp.colourmap: Interpolate smoothly between specified colours
Description
Given a colourmap object which maps numbers to colours,
this function interpolates smoothly between the colours,
yielding a new colour map.
Usage
interp.colourmap(m, n = 512)
Arguments
m
A colour map (object of class "colourmap").
n
Number of colour steps to be created in the new colour map.
Value
Another colour map (object of class "colourmap").
Details
Given a colourmap object m, which maps numerical values to
colours, this function interpolates the mapping,
yielding a new colour map.
This makes it easy to build a colour map that
has smooth gradation between different colours or shades.
First specify a small vector of numbers x which should be mapped to
specific colours y. Use m <- colourmap(y, inputs=x)
to create a colourmap that represents this simple
mapping. Then apply interp.colourmap(m)
to obtain a smooth transition between these points.