In dzulfiqarfr/dfrtheme: Customize ggplot2 chart theme

knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>",
  fig.path = "man/figures/README-",
  fig.width = 7,
  fig.asp = 0.618,
  fig.align = "center",
  out.width = "100%",
  dpi = 300
)

dfrtheme

This is an R package to apply my custom theme on ggplot2{target="_blank"} charts.

There are two functions:

• dfr_theme() to modify the theme components; and

• dfr_convert_font_size() to convert font size from points (pts) to millimeters (mm).

Installation

if (!require("devtools")) install_packages("devtools")
library(devtools)
devtools::install_github("dzulfiqarfr/dfrtheme")

Example

library(dplyr)
library(ggplot2)
library(ggtext)
library(gapminder)
library(dfrtheme)

gapminder_latest <- dplyr::filter(gapminder, year == last(year))

ggplot(
  gapminder_latest, 
  aes(x = gdpPercap, y = lifeExp, fill = continent)
) +
  geom_point(
    pch = 21,
    color = "white",
    size = 2.5,
    stroke = 0.25,
    alpha = 0.75
  ) +
  geom_text(
    aes(label = country),
    size = dfr_convert_font_size(),
    check_overlap = TRUE,
    hjust = "inward",
    vjust = "inward"
  ) +
  scale_x_log10() +
  labs(
    title = "Countries with higher income have better public health",
    subtitle = paste0(
      "GDP per capita at 2005 international dollars ",
      "and life expectancy in 2007"
    ),
    x = "GDP per capita<br>(log scale)",
    y = "Life expectancy<br>(years)",
    caption = "Source: Gapminder<br>Chart: Dzulfiqar Fathur Rahman"
  ) +
  dfr_theme()

Read also

• Best practices to create a new ggplot2 theme (read this article{target="_blank"})

• Understanding text size and resolution in ggplot2 by Christophe Nicault (read his blog post{target="_blank"})

dzulfiqarfr/dfrtheme documentation built on Feb. 5, 2022, 1:19 p.m.