submesh.vertex: Create a submesh including only the given vertices.

In fsbrain: Managing and Visualizing Brain Surface Data

Create a submesh including only the given vertices.

Description

Create a submesh including only the given vertices.

Usage

submesh.vertex(surface_mesh, old_vertex_indices_to_use, ret_mappings = FALSE)

Arguments

surface_mesh	an fs.surface instance, the original mesh
old_vertex_indices_to_use	integer vector, the vertex indices of the 'surface_mesh' that should be used to construct the new sub mesh.
ret_mappings	whether to return the vertex mappings. If TRUE, the return value becomes a list with entries 'submesh', 'vmap_full_to_submesh', and 'vmap_submesh_to_full'.

Value

the new mesh, made up of the given 'old_vertex_indices_to_use' and all (complete) faces that exist between the query vertices in the source mesh. But see 'ret_mapping' parameter.

Examples

## Not run: 
sjd = fsaverage.path(T);
sj = "fsaverage";
mesh = subject.surface(sjd, sj, hemi="lh");
lab = subject.label(sjd, sj, "cortex", hemi = "lh");
sm = fsbrain:::submesh.vertex(mesh, lab);
vis.fs.surface(mesh);
vis.fs.surface(sm);

## End(Not run)

fsbrain documentation built on July 9, 2023, 7:12 p.m.