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.
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")## Helvetica
## "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"))## [1] "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()## This wipes font databases created by `systemfonts`, `extrafonts` and `ggrrr`.
## These will be rebuilt on demand by `ggrrr`.
## N.b. This will NOT remove any custom fonts installed on your system by `ggrrr`.Are you sure? (yes/No/cancel)
# if the fonts is named the names are used for the family on this system
check_font(c("Roboto","Arial","Kings","EB Garamond"))## Roboto Arial Kings EB Garamond
## "Roboto" "Arial" "Kings" "EB Garamond"
systemfonts::registry_fonts()## # A tibble: 0 × 7
## # ℹ 7 variables: path <chr>, index <int>, family <chr>, style <chr>,
## # weight <ord>, italic <lgl>, features <list>