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

```
# 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)
```

x

Graphics symbol map (object of class `"symbolmap"`

).

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.)

None.

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.

`symbolmap`

to create a symbol map.

`invoke.symbolmap`

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

# 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) # }