tag_facet: tag_facet

In egg: Extensions for 'ggplot2': Custom Geom, Custom Themes, Plot Alignment, Labelled Panels, Symmetric Scales, and Fixed Panel Size

Description

Adds a dummy text layer to a ggplot to label facets and sets facet strips to blank. This is the typical formatting for some journals that consider facets as subfigures and want to minimise margins around figures.

Usage

tag_facet(p, open = "(", close = ")", tag_pool = letters, x = -Inf,
  y = Inf, hjust = -0.5, vjust = 1.5, fontface = 2, family = "",
  ...)

Arguments

p	ggplot
open	opening character, default: (
close	closing character, default: )
tag_pool	character vector to pick tags from
x	x position within panel, default: -Inf
y	y position within panel, default: Inf
hjust	hjust
vjust	vjust
fontface	fontface
family	font family
...	further arguments passed to geom_text layer

Value

plot with facet strips removed and replaced by in-panel tags

Examples

library(ggplot2)
mydf = data.frame(
  x = 1:90,
  y = rnorm(90),
  red = rep(letters[1:3], 30),
  blue = c(rep(1, 30), rep(2, 30), rep(3, 30)))

p <- ggplot(mydf) +
  geom_point(aes(x = x, y = y)) +
  facet_wrap(
    ~ red + blue)
tag_facet(p)

Example output

Loading required package: gridExtra
Loading required package: ggplot2

egg documentation built on July 13, 2019, 9:03 a.m.