plot.colourmap

0th

Percentile

Plot a Colour Map

Displays a colour map as a colour ribbon

Keywords
hplot, color, spatial
Usage
## S3 method for class 'colourmap':
plot(x, ...,
       main, xlim = NULL, ylim = NULL, vertical = FALSE, axis = TRUE)
Arguments
x
Colour map to be plotted. An object of class "colourmap".
...
Graphical arguments passed to image.default.
main
Main title for plot. A character string.
xlim
Optional range of x values for the location of the colour ribbon.
ylim
Optional range of y values for the location of the colour ribbon.
vertical
Logical flag determining whether the colour ribbon is plotted as a horizontal strip (FALSE) or a vertical strip (TRUE).
axis
Logical flag determining whether an axis should be plotted showing the numerical values that are mapped to the colours.
Details

This is the plot method for the class "colourmap". An object of this class (created by the function colourmap) represents a colour map or colour lookup table associating colours with each data value.

The command plot.colourmap displays the colour map as a colour ribbon. This plot can be useful on its own to inspect the colour map.

To annotate an existing plot with an explanatory colour ribbon, specify add=TRUE and use the arguments xlim and/or ylim to control the physical position of the ribbon on the plot.

Value

  • None.

See Also

colourmap

Aliases
  • plot.colourmap
Examples
co <- colourmap(rainbow(100), breaks=seq(-1,1,length=101))
  plot(co)
  plot(co, vertical=TRUE)
  ca <- colourmap(rainbow(8), inputs=letters[1:8])
  plot(ca)
Documentation reproduced from package spatstat, version 1.23-2, License: GPL (>= 2)

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