extend_neighbors: Recursive computation of neighborhoods, see surf.sphere.dist
In dfsp-spirit/fsbrain: Managing and Visualizing Brain Surface Data

extend_neighbors

R Documentation

Recursive computation of neighborhoods, see surf.sphere.dist

Description

Compute neighborhood of the current vertex (=target vertex). The computation follows the mesh edges while there are still vertices which fullfil the dotproduct distance threshold.

Usage

extend_neighbors(
  spherical_surface,
  targetvidx,
  currentvidx,
  min_dotp_thresh,
  ref_visited,
  ref_neighbors,
  ref_neighbor_dpdists
)

Arguments

`spherical_surface`	an fs.surface instance representing the spherical version (`lh.sphere` or `rh.sphere` of the subject).
`targetvidx`	positive integer, initial target vertex. The vertex for which to compute the neighborhood.
`currentvidx`	positive integer, initial current vertex. Pass identical value as in targetvidx, this is changed later in the recursion.
`min_dotp_thresh`	double, the minimal dotproduct distance threshold to use. Only vertices along the structural mesh neighborhood with values greater this will be included in the neighborhood. Yes, greater.
`ref_visited`	pass-by-reference (via RefClasses) integer vector of length `num_mesh_vertices`: whether the respective vertex has been visited already.
`ref_neighbors`	pass-by-reference (via RefClasses) integer vector of length `num_mesh_vertices`: whether the respective vertex is part of the current neighborhood.
`ref_neighbor_dpdists`	pass-by-reference (via RefClasses) double vector of length `num_mesh_vertices`: the dotproduct distance to the respective vertex (if it is part of the neighborhood).