Identify missing unit-time cells

panel_gaps() returns the missing unit-time combinations implied by the full panel grid.

Usage

panel_gaps(data, id, time)

Arguments

data

A data frame or tibble.

id

Unquoted column name identifying the panel unit.

time

Unquoted column name identifying the time period.

Value

A tibble containing missing unit-time combinations.

Details

A missing unit-time cell is a combination of an observed panel unit and an observed time period that does not appear in the data. For example, if unit A appears in 2020 and 2022, and 2021 is an observed time period elsewhere in the dataset, then A-2021 is treated as a missing unit-time cell.

This function is a data-frame interface to the missing-cell information produced by audit_panel(). It does not modify, complete, or impute the input data.

See also

audit_panel(), missing_cells(), gap_summary(), complete_panel()

Examples

panel_gaps(example_panel, id = id, time = year)
#> # A tibble: 4 × 2
#>      id  year
#>   <dbl> <dbl>
#> 1     1  2022
#> 2     1  2023
#> 3     2  2021
#> 4     2  2023