Geodesic distances from sources to targets — geodesic_distances • neurosurf

Convenience wrapper returning a numeric vector/matrix.

Usage

geodesic_distances(
  geometry,
  sources,
  targets = NULL,
  weights = NULL,
  algorithm = c("dijkstra"),
  chunk_size = 2000
)

Arguments

geometry: SurfaceGeometry, LabeledNeuroSurface, NeuroSurface, or an igraph.
sources: Integer vector of source vertices.
targets: Optional target vertices (defaults to sources).
weights: Optional numeric edge weights (defaults to E(g)$dist).
algorithm: Only "dijkstra" is currently implemented.
chunk_size: Number of source vertices per Dijkstra batch.

Value

Numeric vector if one source, otherwise a matrix.

Examples

geom <- example_surface_geometry()
d <- geodesic_distances(geom, sources = 1, targets = 2:4)