Restore a layout snapshot — restore_layout_snapshot • dragmapr

Extracts the offset data frame from a snapshot created by create_layout_snapshot().

Usage

restore_layout_snapshot(snapshot)

Arguments

snapshot: A named list as returned by create_layout_snapshot().

Value

A data frame with region, dx_m, and dy_m columns, or NULL if the snapshot was created with offsets = NULL.

See also

create_layout_snapshot().

Examples

offsets <- data.frame(region = c("A", "B"), dx_m = c(10000, -10000), dy_m = 0)
snap <- create_layout_snapshot(
  data.frame(county = c("A", "B")),
  group   = "county",
  offsets = offsets
)
restore_layout_snapshot(snap)
#>   region   dx_m dy_m
#> 1      A  10000    0
#> 2      B -10000    0