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System language

2018/05/14

You can change the language in which R is talking to the user from the definition of the LANG environment variable:

> Sys.getenv("LANG")
[1] "fr_FR.UTF-8"
> log(-3)
Warning in log(-3): production de NaN
[1] NaN

Changing to English:

> Sys.setenv(LANG = "en_US.UTF-8")
> log(-3)
Warning in log(-3): NaNs produced
[1] NaN

and back to French:

> Sys.setenv(LANG = "fr_FR.UTF-8")
> log(-3)
Warning in log(-3): production de NaN
[1] NaN

Or, alternatively:

> Sys.setenv(LANG = "en")
> log(-3)
Warning in log(-3): NaNs produced
[1] NaN

and then:

> Sys.setenv(LANG = "fr")
> log(-3)
Warning in log(-3): production de NaN
[1] NaN