Smooth region values over an adjacency graph

Smooth region values over an adjacency graph

Usage

smooth_region_field_laplacian(
  region_id_mat,
  region_values,
  outside_ids = c(NA_integer_, 0L),
  adjacency = c("rook", "queen"),
  lambda = 5,
  keep_na_outside = TRUE
)

Arguments

region_id_mat

matrix of region identifiers.

region_values

named numeric vector or data frame with region_id and value.

outside_ids

unused compatibility placeholder for non-region values.

adjacency

neighborhood definition: "rook" or "queen".

lambda

smoothing strength.

keep_na_outside

logical; keep non-region pixels as NA.

Value

A list with the interpolated pixel matrix and region-level predictions.