subject.num.verts: Get subjects vertex count.

Description Usage Arguments Value

View source: R/fsdir_abstraction_subject.R

Description

Determine vertex counts for the brain meshes of a subject.

Usage

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subject.num.verts(
  subjects_dir,
  subject_id,
  surface = "white",
  hemi = "both",
  do_sum = FALSE
)

Arguments

subjects_dir

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.

subject_id

string. The subject identifier

surface

string. The surface name. E.g., "white", or "pial". Used to construct the name of the surface file to be loaded.

hemi

string, one of 'lh', 'rh', or 'both'. The hemisphere name. Used to construct the names of the surface file to be loaded. For 'both', see the information on the return value.

do_sum

logical, whether to return the sum of the vertex counts for lh and rh. Ignored unless 'hemi' is 'both'. If set, a single scalar will be returned.

Value

hemilist of integers, the vertex count. If hemi is 'both' and 'do_sum' is 'FALSE', a hemilist of integers is returned. Otherwise, a single integer.


fsbrain documentation built on Sept. 16, 2021, 5:07 p.m.