In slowkow/ggrepel: Automatically Position Non-Overlapping Text Labels with 'ggplot2'

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library(knitr)
opts_chunk$set(
  cache       = FALSE,
  autodep     = TRUE,
  echo        = FALSE,
  warning     = FALSE,
  error       = FALSE,
  message     = FALSE,
  out.width   = 700,
  fig.width   = 12,
  fig.height  = 8,
  dpi         = 300,
  # cache.path  = "cache/ggrepel/",
  # fig.path    = "figures/ggrepel/",
  pngquant    = "--speed=1 --quality=0-10",
  concordance = TRUE
)
knit_hooks$set(
  pngquant = hook_pngquant
)
library(gridExtra)
library(ggplot2)
theme_set(theme_classic(base_size = 18) %+replace% theme(
  # axis.line.y = element_line(colour = "black", size = 0.2),
  # axis.line.x = element_line(colour = "black", size = 0.2),
  axis.ticks   = element_line(colour = "black", size = 0.3),
  panel.background = element_rect(size = 0.3, fill = NA),
  axis.line    = element_blank(),
  plot.title   = element_text(size = 18, vjust = 2, hjust = 0.5),
  strip.text   = element_text(size = 18),
  strip.background = element_blank()
))

Overview

ggrepel provides geoms for ggplot2 to repel overlapping text labels:

• geom_text_repel()
• geom_label_repel()

Text labels repel away from each other, away from data points, and away from edges of the plotting area (panel).

Let's compare geom_text() and geom_text_repel():

library(ggrepel)
set.seed(42)

dat <- subset(mtcars, wt > 2.75 & wt < 3.45)
dat$car <- rownames(dat)

p <- ggplot(dat, aes(wt, mpg, label = car)) +
  geom_point(color = "red")

p1 <- p + geom_text() + labs(title = "geom_text()")

p2 <- p + geom_text_repel() + labs(title = "geom_text_repel()")

gridExtra::grid.arrange(p1, p2, ncol = 2)

Installation

ggrepel is available on CRAN:

install.packages("ggrepel")

The latest development version may have new features, and you can get it from GitHub:

# Use the devtools package
# install.packages("devtools")
devtools::install_github("slowkow/ggrepel")

Usage

See the examples page to learn more about how to use ggrepel in your project.

slowkow/ggrepel documentation built on Feb. 13, 2024, 5:09 p.m.