draw_key_gshape {ggalign} | R Documentation |
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. The draw_key_gshape
function provides this interface for custom
key glyphs used with geom_gshape()
.
Usage
draw_key_gshape(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)
[Package ggalign version 1.0.2 Index]