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Drops Temporary Variables From a Dataset

Source: R/drop_temp_vars.R
drop_temp_vars.Rd

Drops all the temporary variables (variables beginning with TEMP_) from the input dataset. Also allows the user to specify whether or not to drop the temporary variables needed throughout multiple steps of the datacut process (variables beginning with DCUT_TEMP_).

Usage 

drop_temp_vars(dsin, drop_dcut_temp = TRUE)

Arguments

dsin

Name of input dataframe

drop_dcut_temp

Whether or not to drop variables beginning with DCUT_TEMP_ (TRUE/FALSE).

Value

Returns the input dataframe, excluding the temporary variables.

Details

The other functions within this package use drop_temp_vars with the drop_dcut_temp argument set to FALSE so that the variables needed across multiple steps of the process are kept. The final datacut takes place in the apply_cut function, at which point drop_temp_vars is used with the drop_dcut_temp argument set to TRUE, so that all temporary variables are dropped.

Examples 

ae <- tibble::tribble(
  ~USUBJID, ~AESEQ, ~TEMP_FLAG, ~DCUT_TEMP_REMOVE,
  "subject1", 1, "Y", NA,
  "subject1", 2, "Y", NA,
  "subject1", 3, NA, "Y",
  "subject2", 2, "Y", NA,
  "subject3", 1, NA, "Y",
  "subject4", 1, NA, "Y"
)
drop_temp_vars(dsin = ae) # Drops temp_ and dcut_temp_ variables
#> # A tibble: 6 × 2
#>   USUBJID  AESEQ
#>   <chr>    <dbl>
#> 1 subject1     1
#> 2 subject1     2
#> 3 subject1     3
#> 4 subject2     2
#> 5 subject3     1
#> 6 subject4     1
drop_temp_vars(dsin = ae, drop_dcut_temp = TRUE) # Drops temp_ and dcut_temp_ variables
#> # A tibble: 6 × 2
#>   USUBJID  AESEQ
#>   <chr>    <dbl>
#> 1 subject1     1
#> 2 subject1     2
#> 3 subject1     3
#> 4 subject2     2
#> 5 subject3     1
#> 6 subject4     1
drop_temp_vars(dsin = ae, drop_dcut_temp = FALSE) # Drops temp_ variables
#> # A tibble: 6 × 3
#>   USUBJID  AESEQ DCUT_TEMP_REMOVE
#>   <chr>    <dbl> <chr>           
#> 1 subject1     1 NA              
#> 2 subject1     2 NA              
#> 3 subject1     3 Y               
#> 4 subject2     2 NA              
#> 5 subject3     1 Y               
#> 6 subject4     1 Y