Given a single vector of per-vertex data for a mesh, split it at the hemi boundary. This is achieved by loading the respective surface and checking the number of vertices for the 2 hemispheres.
vdata.split.by.hemi(
subjects_dir,
subject_id,
vdata,
surface = "white",
expand = TRUE
)string. The FreeSurfer SUBJECTS_DIR, i.e., a directory containing the data for all your subjects, each in a subdir named after the subject identifier.
string. The subject identifier
numerical vector of data for both hemispheres, one value per vertex
the surface to load to determine the vertex counts
logical, whether to allow input of length 1, and expand (repeat) it to the length of the hemispheres.
a hemilist, each entry contains the data part of the respective hemi.