Add locale argument to `step_date()`

[juliasilge]

Thanks to @cderv for highlighting this problem:

library(recipes)
#> Le chargement a nécessité le package : dplyr
#> 
#> Attachement du package : 'dplyr'
#> Les objets suivants sont masqués depuis 'package:stats':
#> 
#>     filter, lag
#> Les objets suivants sont masqués depuis 'package:base':
#> 
#>     intersect, setdiff, setequal, union
#> 
#> Attachement du package : 'recipes'
#> L'objet suivant est masqué depuis 'package:stats':
#> 
#>     step

examples <- tibble(someday = lubridate::ymd("2000-12-20") + lubridate::days(0:40))
recipe(~ someday, examples) %>%
  step_date(all_predictors()) %>%
  prep() %>%
  bake(new_data = examples)
#> # A tibble: 41 × 4
#>    someday    someday_dow someday_month someday_year
#>    <date>     <fct>       <fct>                <dbl>
#>  1 2000-12-20 "mer\\."    déc                   2000
#>  2 2000-12-21 "jeu\\."    déc                   2000
#>  3 2000-12-22 "ven\\."    déc                   2000
#>  4 2000-12-23 "sam\\."    déc                   2000
#>  5 2000-12-24 "dim\\."    déc                   2000
#>  6 2000-12-25 "lun\\."    déc                   2000
#>  7 2000-12-26 "mar\\."    déc                   2000
#>  8 2000-12-27 "mer\\."    déc                   2000
#>  9 2000-12-28 "jeu\\."    déc                   2000
#> 10 2000-12-29 "ven\\."    déc                   2000
#> # … with 31 more rows

^{Created on 2022-06-07 by the reprex package (v2.0.1)}

I had deployed a workflow that used step_date(), and he could not predict from it locally because of the language difference.

We could:

• at the least document this possible problem
• save at prep() time the transformations used so they can be applied at bake() time

[juliasilge]

Issue 1000!!! 🎉 🎉 😆

[EmilHvitfeldt]

Full reprex

library(recipes)

Sys.setlocale("LC_TIME", 'fr_FR.UTF-8')
#> [1] "fr_FR.UTF-8"

examples <- tibble(someday = lubridate::ymd("2000-12-20") + lubridate::days(0:40))
rec <- recipe(~ someday, examples) %>%
  step_date(all_predictors()) %>%
  prep() 

rec %>%
  bake(new_data = examples)
#> # A tibble: 41 × 4
#>    someday    someday_dow someday_month someday_year
#>    <date>     <fct>       <fct>                <dbl>
#>  1 2000-12-20 Mer         déc                   2000
#>  2 2000-12-21 Jeu         déc                   2000
#>  3 2000-12-22 Ven         déc                   2000
#>  4 2000-12-23 Sam         déc                   2000
#>  5 2000-12-24 Dim         déc                   2000
#>  6 2000-12-25 Lun         déc                   2000
#>  7 2000-12-26 Mar         déc                   2000
#>  8 2000-12-27 Mer         déc                   2000
#>  9 2000-12-28 Jeu         déc                   2000
#> 10 2000-12-29 Ven         déc                   2000
#> # … with 31 more rows

Sys.setlocale("LC_TIME", 'en_GB.UTF-8')
#> [1] "en_GB.UTF-8"

rec %>%
  bake(new_data = examples)
#> # A tibble: 41 × 4
#>    someday    someday_dow someday_month someday_year
#>    <date>     <fct>       <fct>                <dbl>
#>  1 2000-12-20 <NA>        <NA>                  2000
#>  2 2000-12-21 <NA>        <NA>                  2000
#>  3 2000-12-22 <NA>        <NA>                  2000
#>  4 2000-12-23 <NA>        <NA>                  2000
#>  5 2000-12-24 <NA>        <NA>                  2000
#>  6 2000-12-25 <NA>        <NA>                  2000
#>  7 2000-12-26 <NA>        <NA>                  2000
#>  8 2000-12-27 <NA>        <NA>                  2000
#>  9 2000-12-28 <NA>        <NA>                  2000
#> 10 2000-12-29 <NA>        <NA>                  2000
#> # … with 31 more rows

^{Created on 2022-06-07 by the reprex package (v2.0.1)}

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