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Hexagon key glyph for legends

Source: R/GeomHextile.R
draw_key_hextile.Rd

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 ggplot2::layer() or examples below.)

Usage

draw_key_hextile(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.

See also

ggplot2::draw_key, geom_hextile().

Examples

library(ggplot2)

d <- ggplot(diamonds, aes(carat, price, linewidth = after_stat(count))) +
  scale_linewidth(trans = "log10")
d + geom_hex(colour = "black")


# key glyphs can be specified by their name
d + geom_hex(colour = "black", key_glyph = "hextile")


# key glyphs can be specified via their drawing function
d + geom_hex(colour = "black", key_glyph = draw_key_hextile)