Applies the hierarchical centroid-driven displacement field to every polygon.
Each unit receives rigid-body translation t_i = alpha_r * dhat_state + alpha_l * s_i * dhat_local.
Usage
explode_sf_core(
sf_obj,
region_col,
alpha_r,
alpha_l,
p = 1.25,
centroid_fun = c("centroid", "point_on_surface")
)
Arguments
- sf_obj
Projected sf object with region column
- region_col
Grouping column name
- alpha_r
Regional separation magnitude (in metres)
- alpha_l
Local expansion magnitude (in metres)
- p
Distance scaling exponent (default 1.25)
- centroid_fun
"centroid" (default) or "point_on_surface"
Value
Exploded sf object (same CRS as input)
Details
Propositions 1-3 guarantee: exact geometry preservation, radial ordering, and
bounded displacement (||t_i|| <= alpha_r + alpha_l).
