ggpointless (version 0.1.0)

draw_key_lexis: Key glyphs for legends

Description

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 of the geom_lexis() function draws a short line of 45° with a point at the end, see examples below.

Usage

draw_key_pointless(data, params, size)
draw_key_sabline(data, params, linewidth, size)
draw_key_lexis(data, params, linewidth, size)

Value

A grid grob.

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.

Examples

df1 <- data.frame(x = c(0, 1), xend = c(2, 3), grp = c("A", "B"))
ggplot(df1, aes(x, xend = xend, color = grp)) +
  geom_lexis()

# the glyph can be changed using the `key_glyph` argument
ggplot(mtcars, aes(wt, mpg, color = "red")) +
  geom_point(key_glyph = "lexis")