There are quite a few systems for font management in R. A key part of our work is trying to make graphs and tables cross platform reproducible, and consistent. This means dealing with fonts across different platforms.
knitr::opts_chunk$set(echo = TRUE) library(ggrrr)
Transparently ensure a font is available
Instead of specifying a font family as a character in a call to ggplot, we can
use a check_font() call which tries to find the font on your system and if not
available downloads it from Google fonts or Brick and registers it with systemfonts,
returning the family name.
ggplot rendering uses systemfonts and attempts
to make the output portable for use by embedding webfonts into the svg outputs.
if the sub option is TRUE, check_font() will guess an alternative.
check_font("Helvetica")
Check what fonts are available
Find out what fonts ggrrr can find on this system.
# list all available fonts tmp = fonts_available() # Check if specific fonts are available. Returns fonts_available(c("Roboto","Arial","Helvetica"))
Download a font from webfont providers
Checks if a local font is available. If not downloads and installs the font and
registers in the systemfonts packages. Currently supported are google and
brick
# clears any registered fonts reset_fonts() # if the fonts is named the names are used for the family on this system check_font(c("Roboto","Arial","Kings","EB Garamond")) systemfonts::registry_fonts()
