Interpolate smoothly between specified colours
Given a colourmap object which maps numbers to colours, this function interpolates smoothly between the colours, yielding a new colour map.
interp.colourmap(m, n = 512)
m |
A colour map (object of class |
n |
Number of colour steps to be created in the new colour map. |
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.
Another colour map (object of class "colourmap").
Adrian Baddeley Adrian.Baddeley@curtin.edu.au and Rolf Turner r.turner@auckland.ac.nz
co <- colourmap(inputs=c(0, 0.5, 1), c("black", "red", "white"))
plot(interp.colourmap(co))Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.