Renderer-neutral transition data — transition

Describes original-to-final movement for groups or features. Rendering systems can use this table for SVG, MapLibre, deck.gl, or static animation plans without inspecting layout internals.

Usage

transition_data(
  layout,
  level = c("group", "feature"),
  id_col = NULL,
  ordering = NULL,
  require_stable_id = identical(level, "feature")
)

Arguments

layout: A grouped_exploded_map.
level: Either "group" or "feature".
id_col: Optional feature ID column for level = "feature".
ordering: Optional ordering column for level = "feature".
require_stable_id: Require a real feature ID column for feature-level persistent handoffs. When TRUE, row-number fallback IDs are rejected.

Value

A data frame with movement, distance, angle, and animation order.