# plot.symbolmap

##### Plot a Graphics Symbol Map

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

##### Usage

```
# S3 method for symbolmap
plot(x, …, main, xlim = NULL, ylim = NULL,
vertical = FALSE,
side = c("bottom", "left", "top", "right"),
annotate = TRUE, labelmap = NULL, add = FALSE,
nsymbols = NULL)
```

##### 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.- nsymbols
Optional. The number of symbols that should be displayed. (This may not be exactly obeyed.)

##### 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.

##### See Also

`symbolmap`

to create a symbol map.

`invoke.symbolmap`

to apply the symbol map to some data
and plot the resulting symbols.

##### Examples

```
# NOT RUN {
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 1.57-1, License: GPL (>= 2)*