Filter UCDP events by spatial and temporal precision

Usage

ucdp_filter_precision(
  data,
  where_prec = NULL,
  date_prec = NULL,
  missing = c("drop", "keep", "error")
)

Arguments

data: A data frame containing UCDP precision variables.
where_prec: Spatial precision codes to retain. NULL applies no spatial filter.
date_prec: Temporal precision codes to retain. NULL applies no temporal filter.
missing: Whether missing values in an actively filtered precision variable should be dropped, retained, or treated as an error.

Value

data restricted to the requested precision, with provenance and spatial class retained.

Examples

events <- data.frame(
  id = 1:4, where_prec = c(1, 2, 6, NA), date_prec = c(1, 3, 5, 1)
)
ucdp_filter_precision(events, where_prec = 1:2, date_prec = 1:3)
#>   id where_prec date_prec
#> 1  1          1         1
#> 2  2          2         3
ucdp_filter_precision(events, where_prec = 1:2, missing = "keep")
#>   id where_prec date_prec
#> 1  1          1         1
#> 2  2          2         3
#> 4  4         NA         1