ggpp_draw_key: Key glyphs for legends

In ggpp: Grammar Extensions to 'ggplot2'

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 can be customized for individual geoms by providing a geom with the 'key_glyph' argument (see ['layer()'] or examples below.)

Usage

draw_key_text_s(data, params, size)

draw_key_label_s(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.

Examples

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)

ggpp documentation built on July 1, 2024, 9:07 a.m.