plot.symbolmap

From spatstat v1.41-1 by Adrian Baddeley

Plot a Graphics Symbol Map

Plot a representation of a graphics symbol map, similar to a plot legend.

Keywords: hplot, spatial

Usage

## S3 method for class 'symbolmap':
plot(x, \dots, main, xlim = NULL, ylim = NULL,
                           vertical = FALSE,
                           side = c("bottom", "left", "top", "right"),
                           annotate = TRUE, labelmap = NULL, add = FALSE)

Arguments

x: Graphics symbol map (object of class "symbolmap").
...: Additional graphics arguments passed to points, symbols or axis.
main: Main title for the plot. A character string.
xlim,ylim: Coordinate limits for the plot. Numeric vectors of length 2.
vertical: Logical. Whether to plot the symbol map in a vertical orientation.
side: Character string specifying the position of the text that annotates the symbols.
annotate: Logical. Whether to annotate the symbols with labels.
labelmap: Transformation of the labels. A function or a scale factor which will be applied to the data values corresponding to the plotted symbols.
add: Logical value indicating whether to add the plot to the current plot (add=TRUE) or to initialise a new plot.

Details

A graphics symbol map is an association between data values and graphical symbols.

This command plots the graphics symbol map itself, in the style of a plot legend.

Value

None.

Examples

g <- symbolmap(inputs=letters[1:10], pch=11:20)
  plot(g)

  g2 <- symbolmap(range=c(-1,1),
                    shape=function(x) ifelse(x > 0, "circles", "squares"),
                    size=function(x) sqrt(ifelse(x > 0, x/pi, -x)),
                    bg = function(x) ifelse(abs(x) < 1, "red", "black"))
  plot(g2, vertical=TRUE, side="left", col.axis="blue", cex.axis=2)

Documentation reproduced from package spatstat, version 1.41-1, License: GPL (>= 2)

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