Key drawing functions for bivariate intervals.

These key drawing functions supplement those built into ggplot2 for legend glyphs suitable to bivariate line-ranges and point-ranges.

Usage

draw_key_line(data, params, size)

draw_key_crosslines(data, params, size)

draw_key_crosspoint(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.

Details

draw_key_line() is a horizontal counterpart to ggplot2::draw_key_vline(). draw_key_crosslines() superimposes these two keys, and draw_key_crosspoint() additionally superimposes an oversized ggplot2::draw_key_point().

See also

ggplot2::draw_key for key glyphs installed with ggplot2.