mesh.atlas.hide.nan.vertices: Hide the vertices that carry NaN data in a coloredmesh.

In fsbrain: Managing and Visualizing Brain Surface Data

Hide the vertices that carry NaN data in a coloredmesh.

Description

Remove the vertices (and all faces that use them) for which the data value is NaN. This hides the respective region completely, it is not rendered at all. This is a per-vertex operation, so it also works for meshes in which several regions share a single mesh (like a mesh atlas), in contrast to the mesh-wide rendering style. It is the basis of hiding individual regions of a mesh atlas by passing NaN as their value.

Usage

mesh.atlas.hide.nan.vertices(cmesh, hemi)

Arguments

cmesh	fs.coloredmesh, the coloredmesh to modify. It must have data values in metadata$src_data which can be mapped to the vertices of the mesh.
hemi	character string, one of 'lh' or 'rh', the hemisphere of the mesh. Used to look up the data values in the hemilist metadata$src_data.

Value

fs.coloredmesh, the modified coloredmesh. If the mesh contains no NaN data (or the data cannot be mapped to the vertices), the input is returned unchanged. If all vertices are NaN, the returned mesh has the property 'render' set to FALSE, which makes the rendering functions skip it.

fsbrain documentation built on Sept. 27, 2026, 1:07 a.m.