String legend

This type of legend shows colour and fill mappings as coloured text. It does not draw keys as guide_legend() does.

guide_stringlegend(
  title = waiver(),
  theme = NULL,
  position = NULL,
  direction = NULL,
  nrow = NULL,
  ncol = NULL,
  reverse = FALSE,
  order = 0
)

Arguments

title

A character string or expression indicating a title of guide. If NULL, the title is not shown. By default (waiver()), the name of the scale object or the name specified in labs() is used for the title.

theme

A theme object to style the guide individually or differently from the plot's theme settings. The theme argument in the guide overrides, and is combined with, the plot's theme.

position

A character string indicating where the legend should be placed relative to the plot panels.

direction

A character string indicating the direction of the guide. One of "horizontal" or "vertical."

nrow, ncol

The desired number of rows and column of legends respectively.

reverse

logical. If TRUE the order of legends is reversed.

order

positive integer less than 99 that specifies the order of this guide among multiple guides. This controls the order in which multiple guides are displayed, not the contents of the guide itself. If 0 (default), the order is determined by a secret algorithm.

Value

A GuideStringlegend object.

Examples

p <- ggplot(mpg, aes(displ, hwy)) +
  geom_point(aes(colour = manufacturer))

# String legend can be set in the `guides()` function
p + guides(colour = guide_stringlegend(ncol = 2))


# The string legend can also be set as argument to the scale
p + scale_colour_viridis_d(guide = "stringlegend")