draw_key

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Percentile

Key glyphs for legends

Each geom has an associated function that draws the key when the geom needs to be displayed in a legend. These functions are called draw_key_*(), where * stands for the name of the respective key glyph. The key glyphs can be customized for individual geoms by providing a geom with the key_glyph argument (see layer() or examples below.)

Usage
draw_key_point(data, params, size)

draw_key_abline(data, params, size)

draw_key_rect(data, params, size)

draw_key_polygon(data, params, size)

draw_key_blank(data, params, size)

draw_key_boxplot(data, params, size)

draw_key_crossbar(data, params, size)

draw_key_path(data, params, size)

draw_key_vpath(data, params, size)

draw_key_dotplot(data, params, size)

draw_key_pointrange(data, params, size)

draw_key_smooth(data, params, size)

draw_key_text(data, params, size)

draw_key_label(data, params, size)

draw_key_vline(data, params, size)

draw_key_timeseries(data, params, size)

Arguments
data

A single row data frame containing the scaled aesthetics to display in this key

params

A list of additional parameters supplied to the geom.

size

Width and height of key in mm.

Value

A grid grob.

Aliases
  • draw_key
  • draw_key_point
  • draw_key_abline
  • draw_key_rect
  • draw_key_polygon
  • draw_key_blank
  • draw_key_boxplot
  • draw_key_crossbar
  • draw_key_path
  • draw_key_vpath
  • draw_key_dotplot
  • draw_key_pointrange
  • draw_key_smooth
  • draw_key_text
  • draw_key_label
  • draw_key_vline
  • draw_key_timeseries
Examples
# NOT RUN {
p <- ggplot(economics, aes(date, psavert, color = "savings rate"))
# key glyphs can be specified by their name
p + geom_line(key_glyph = "timeseries")

# key glyphs can be specified via their drawing function
p + geom_line(key_glyph = draw_key_rect)
# }
Documentation reproduced from package ggplot2, version 3.2.0, License: GPL-2 | file LICENSE

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