Some workarounds for mis-encoded environment variables on Windows for users with non-ASCII characters in their username.

rstudio-windows-encoding-workarounds.R

# Place this in a file at '~/.Rprofile' to ensure it's sourced on startup
.First <- function() {
    # RStudio-specific startup
    if (!is.na(Sys.getenv("RSTUDIO", unset = NA)) &&
        Sys.info()[["sysname"]] == "Windows")
    {
        # work around mis-encoded environment variables
        USERPROFILE <- Sys.getenv("USERPROFILE")
        HOME <- file.path(USERPROFILE, "Documents", fsep = "\\")
        R_USER <- HOME
        R_LIBS_USER <- file.path(HOME, "R", "win-library", getRversion()[1, 1:2], fsep = "\\")
        
        Sys.setenv(
            HOME        = HOME,
            R_USER      = R_USER,
            R_LIBS_USER = R_LIBS_USER
        )
        
        # update library paths
        if (!isTRUE(file.info(R_LIBS_USER)$isdir))
            dir.create(R_LIBS_USER, recursive = TRUE)
        .libPaths(R_LIBS_USER)
    }
}

Hello!
I'm from china, just start to learn R.
I don't quite understand what this comment mean "# Place this in a file at '~/.Rprofile' to ensure it's sourced on startup".
I copy the code under the work directory, and name it with .Rprofile, but it doesn't work for me, maybe I try the wrong way.

When I try to run code below:
i <- c(10, 13, 45, 26, 23, 12, 24, 78, 23, 43, 31, 56)
j <- c(20, 65, 32, 32, 27, 87, 60, 13, 42, 51, 77, 35)
k <- data.frame('重量' = i, '运费' = j)
plot(k)

I find this error:
"Error in gzfile(file, "wb") : cannot open the connection
In addition: Warning message:
In gzfile(file, "wb") :
cannot open compressed file 'C:/Users/??????/AppData/Local/Temp/RtmpAfbRLc/rs-graphics-2bd95ba4-75e3-4da5-adc4-74ec45d0ea69/d97896e9-fe62-4003-be34-2ac79cdf775a.snapshot', probable reason 'Invalid argument'
Graphics error: Plot rendering error"

In fact, this is the first time I leave a message on an English website, just hope i didn't bother you. Thanks!

I find the reason!
All the errors was just because the environment variables TMP and TEMP I set had non-ASCII characters in them.