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Save an object to a file with a new name

Source: R/general_save_as.R
save_as.Rd

This function saves an R object to a specified file path with a potentially new object name. It is useful for renaming objects during the save process. The function supports saving objects in RData, qs2, feather, and rds formats. The format is determined by the extension of the file path (case-insensitive).

Usage

save_as(
  object = NULL,
  object_name = NULL,
  out_path = NULL,
  n_threads = 1L,
  feather_compression = "zstd",
  ...
)

Arguments

object

The input object to be saved. This can be an actual R object or a character string representing the name of an object.

object_name

Character. The new name for the saved RData object. This name is used when the object is loaded back into R. Default is NULL. This is required when saving RData files.

out_path

Character. File path (ends with either *.RData, *.qs2, feather, and rds) where the object be saved. This includes the directory and the file name.

n_threads

Character. Number of threads to use when compressing data. See qs2::qs_save.

feather_compression

Character. The compression algorithm to use when saving the object in the feather format. The default is "zstd". See arrow::write_feather.

...

Additional arguments to be passed to the respective save functions. base::save for RData files; qs2::qs_save for qs2 files; arrow::write_feather for feather files; and base::saveRDS for rds files.

Value

The function does not return a value but saves an object to the specified file path.

Author

Ahmed El-Gabbas

Examples

load_packages(fs, tibble)

temp_dir <- fs::path_temp("save_as")
fs::dir_create(temp_dir)
out_file <- fs::path(temp_dir, "iris2.RData")
list.files(temp_dir)
#> character(0)

# save iris data as `iris2.RData` with `iris2` object name
save_as(
  object = tibble::tibble(iris), object_name = "iris2", out_path = out_file)

list.files(temp_dir, pattern = "^.+.RData")
#> [1] "iris2.RData"

# load the object to global environment. The data is loaded as `iris2`
(loaded_name <- load(out_file))
#> [1] "iris2"

ecokit::load_as(out_file)
#> # A tibble: 150 × 5
#>    Sepal.Length Sepal.Width Petal.Length Petal.Width Species
#>           <dbl>       <dbl>        <dbl>       <dbl> <fct>  
#>  1          5.1         3.5          1.4         0.2 setosa 
#>  2          4.9         3            1.4         0.2 setosa 
#>  3          4.7         3.2          1.3         0.2 setosa 
#>  4          4.6         3.1          1.5         0.2 setosa 
#>  5          5           3.6          1.4         0.2 setosa 
#>  6          5.4         3.9          1.7         0.4 setosa 
#>  7          4.6         3.4          1.4         0.3 setosa 
#>  8          5           3.4          1.5         0.2 setosa 
#>  9          4.4         2.9          1.4         0.2 setosa 
#> 10          4.9         3.1          1.5         0.1 setosa 
#> # ℹ 140 more rows

# clean up
fs::file_delete(out_file)