R: Change Colour Values in a Colour Map

tweak.colourmap {spatstat.geom} | R Documentation

## Change Colour Values in a Colour Map

### Description

Assign new colour values to some of the entries in a colour map.

### Usage

    tweak.colourmap(m, col, ..., inputs=NULL, range=NULL)

### Arguments

`m` | A colour map (object of class `"colourmap"`).
`inputs` | Input values to the colour map, to be assigned new colours. Incompatible with `range`.
`range` | Numeric vector of length 2 specifying a range of numerical values which should be assigned a new colour. Incompatible with `inputs`.
`col` | Replacement colours for the specified `inputs` or the specified `range` of values.
`...` | Other arguments are ignored.

### Details

This function changes the colour map `m` by assigning new colours to each of the input values specified by `inputs`, or by assigning a single new colour to the range of input values specified by `range`.

The modified colour map is returned.

### Value

Another colour map (object of class `"colourmap"`).

### Author(s)

Adrian Baddeley Adrian.Baddeley@curtin.edu.au, Rolf Turner r.turner@auckland.ac.nz and Ege Rubak rubak@math.aau.dk.

### See Also

`colourmap`, `interp.colourmap`, `colouroutputs`, `colourtools`.

### Examples

      co <- colourmap(rainbow(32), range=c(0,1))
      plot(tweak.colourmap(co, inputs=c(0.5, 0.6), "white"))
      plot(tweak.colourmap(co, range=c(0.5,0.6), "white"))

[Package spatstat.geom version 2.2-0 Index]