Extract the colour values in a colour map, or assign new colour values.
colouroutputs(x)colouroutputs(x) <- value
The result of colouroutputs is a character vector of
colour values. The result of the assignment
colouroutputs(x) <- value is
another colour map (object of class "colourmap").
A colour map (object of class "colourmap").
A vector of values that can be interpreted as colours.
Adrian Baddeley Adrian.Baddeley@curtin.edu.au, Rolf Turner r.turner@auckland.ac.nz and Ege Rubak rubak@math.aau.dk.
An object of class "colourmap" is effectively a function that
maps its inputs (numbers or factor levels) to colour values.
The command colouroutputs(x) extracts the colour values
in the colour map x.
The assignment colouroutputs(x) <- value replaces the colour
values in the colour map x by the entries in
value. The replacement vector value should have the
same length as colouroutputs(x), and its entries should be
interpretable as colours.
To change only some of the colour values in a colour map,
it may be easier to use tweak.colourmap.
colourmap,
interp.colourmap,
tweak.colourmap,
colourtools.
m <- colourmap(rainbow(5), range=c(0,1))
m
# reverse order of colours
colouroutputs(m) <- rev(colouroutputs(m))
m
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