Locale settings

Temporarily change locale settings.

with_locale(new, code)

local_locale(.new = list(), ..., .local_envir = parent.frame())

Arguments

new, .new

[named character]
New locale settings

code

[any]
Code to execute in the temporary environment

...

Additional arguments with locale settings.

.local_envir

[environment]
The environment to use for scoping.

Value

[any]
The results of the evaluation of the code argument.

Details

Setting the LC_ALL category is currently not implemented.

See also

withr for examples

Sys.setlocale()

Examples

## Change locale for time:
df <- data.frame(
  stringsAsFactors = FALSE,
  date = as.Date(c("2019-01-01", "2019-02-01")),
  value = c(1, 2)
)
with_locale(new = c("LC_TIME" = "es_ES"), code = plot(df$date, df$value))
#> Warning: OS reports request to set locale to "es_ES" cannot be honored

## Compare with:
#  plot(df$date, df$value)

## Month names:
with_locale(new = c("LC_TIME" = "en_GB"), format(ISOdate(2000, 1:12, 1), "%B"))
#> Warning: OS reports request to set locale to "en_GB" cannot be honored
#>  [1] "January"   "February"  "March"     "April"     "May"       "June"     
#>  [7] "July"      "August"    "September" "October"   "November"  "December" 
with_locale(new = c("LC_TIME" = "es_ES"), format(ISOdate(2000, 1:12, 1), "%B"))
#> Warning: OS reports request to set locale to "es_ES" cannot be honored
#>  [1] "January"   "February"  "March"     "April"     "May"       "June"     
#>  [7] "July"      "August"    "September" "October"   "November"  "December" 

## Change locale for currencies:
with_locale(new = c("LC_MONETARY" = "it_IT"), Sys.localeconv())
#> Warning: OS reports request to set locale to "it_IT" cannot be honored
#>     decimal_point     thousands_sep          grouping   int_curr_symbol 
#>               "."                ""                ""            "USD " 
#>   currency_symbol mon_decimal_point mon_thousands_sep      mon_grouping 
#>               "$"               "."               ","        "\003\003" 
#>     positive_sign     negative_sign   int_frac_digits       frac_digits 
#>                ""               "-"               "2"               "2" 
#>     p_cs_precedes    p_sep_by_space     n_cs_precedes    n_sep_by_space 
#>               "1"               "0"               "1"               "0" 
#>       p_sign_posn       n_sign_posn 
#>               "1"               "1" 
with_locale(new = c("LC_MONETARY" = "en_US"), Sys.localeconv())
#> Warning: OS reports request to set locale to "en_US" cannot be honored
#>     decimal_point     thousands_sep          grouping   int_curr_symbol 
#>               "."                ""                ""            "USD " 
#>   currency_symbol mon_decimal_point mon_thousands_sep      mon_grouping 
#>               "$"               "."               ","        "\003\003" 
#>     positive_sign     negative_sign   int_frac_digits       frac_digits 
#>                ""               "-"               "2"               "2" 
#>     p_cs_precedes    p_sep_by_space     n_cs_precedes    n_sep_by_space 
#>               "1"               "0"               "1"               "0" 
#>       p_sign_posn       n_sign_posn 
#>               "1"               "1" 

## Ordering:
x <- c("bernard", "bérénice", "béatrice", "boris")
with_locale(c(LC_COLLATE = "fr_FR"), sort(x))
#> Warning: OS reports request to set locale to "fr_FR" cannot be honored
#> [1] "bernard"  "boris"    "béatrice" "bérénice"
with_locale(c(LC_COLLATE = "C"), sort(x))
#> [1] "bernard"  "boris"    "béatrice" "bérénice"