extrafont::loadfonts(device = “win”) 在 Rprofile 中不起作用，但在控制台中很好

Question

I was trying to follow Will Chase's advice on putting the loadfonts line in the.RProfile file so I can be executed before I customarily load ggplot2. his advice

Somehow I encountered this interesting phenomenon, when I write:

if(interactive()) 
  try(extrafont::loadfonts(device = "win"))

RStudio gave an error

Error in get(as.character(FUN), mode = "function", envir = envir) : 
  object 'windowsFonts' of mode 'function' was not found

Must be some behind the scene magic. once I lay my hands on the console though, I can just run extrafont::loadfonts(device = "win") and it will be registering fonts with R using windowsFonts() .

it seems windowsFonts function is not available when.RProfile is being interpreted. Not sure why, and any help to allow me to wrap my mind around this issue would be appreciated.

Answer 1

Way late on a response, but I was having the same issue and figured out a solution after reading this. windowsFonts() is a function in grDevices library. extrafont imports grDevices, but for some reason it's not recognized when run in.Rprofile - it must have something to do with the order of operations when R loads. If you load grDevices it works. See code below.

library(extrafont)
loadfonts("win", quiet = F)

Error in get(as.character(FUN), mode = "function", envir = envir) : 
  object 'windowsFonts' of mode 'function' was not found
Calls: <Anonymous> -> match.fun -> get
Execution halted

library(grDevices)
library(extrafont)
loadfonts("win", quiet = F)
Registering fonts with R