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Generate Observed Combinations Only

Source: R/xobs-only.R
xobs_only.Rd

Generate Observed Combinations Only

Usage

xobs_only(..., .length_out = NULL, .data = xnew_data_env$data)

Arguments

...

One or more variables to generate combinations for.

.length_out

A count to override the default length of sequences.

.data

Normally defined by xnew_data(), users must pass a data frame or tibble if using this function directly.

See also

xnew_data()

Examples

data <- tibble::tibble(
  period = factor(c("before", "before", "after", "after"),
    levels = c("before", "after")
  ),
  annual = factor(c(1, 3, 5, 8), levels = c(1, 3, 5, 8))
)
xnew_data(data, period, annual)
#> # A tibble: 8 × 2
#>   period annual
#>   <fct>  <fct> 
#> 1 before 1     
#> 2 before 3     
#> 3 before 5     
#> 4 before 8     
#> 5 after  1     
#> 6 after  3     
#> 7 after  5     
#> 8 after  8     
xnew_data(data, xobs_only(period, annual))
#> # A tibble: 4 × 2
#>   period annual
#>   <fct>  <fct> 
#> 1 before 1     
#> 2 before 3     
#> 3 after  5     
#> 4 after  8     
xnew_data(data, xobs_only(period, xnew_seq(annual, length_out = 3)))
#> # A tibble: 3 × 2
#>   period annual
#>   <fct>  <fct> 
#> 1 before 1     
#> 2 before 3     
#> 3 after  5