interp_tris: Interpolate values within mesh triangles in R.

In dfsp-spirit/haze: Smoothing of per-Vertex Data on Triangular Meshes

Interpolate values within mesh triangles in R.

Description

Interpolate values within mesh triangles in R.

Usage

interp_tris(
  query_coordinates,
  mesh_vertices,
  nearest_face_vertices,
  pervertex_data,
  iwd_beta = 2,
  cpp = TRUE
)

Arguments

query_coordinates	nx3 numerical matrix of x,y,z coordinates. These are typically the vertex positions of a second (spherical!) mesh for that you need per-vertex data (e.g., the fsaverage6 mesh).
mesh_vertices	nx3 matrix of x,y,z cartesian coordinates for the n mesh vertices (of the mesh that has the 'pervertex_data').
pervertex_data	numerical vector, the continuous per-vertex data for the vertices of the mesh.
iwd_beta	scalar double, the beta parameter for the inverse distance weight interpolation with the triangle. See details.
cpp	logical, whether to use the much faster C++ version. Leave alone unless you know what you are doing. Changing this to FALSE will make this a lot slower.

Value

vector with one entry per query coordinate (i.e., nrow(query_coordinates)).

dfsp-spirit/haze documentation built on Feb. 28, 2023, 11:45 p.m.