FREESURFER MRIsExpand — ni_freesurfer_mr_is

Expands a surface (typically ?h.white) outwards while maintaining

Usage

ni_freesurfer_mr_is_expand(
  distance,
  in_file,
  args = NULL,
  dt = NULL,
  nsurfaces = NULL,
  out_name = "expanded",
  pial = NULL,
  smooth_averages = NULL,
  spring = NULL,
  thickness = NULL,
  thickness_name = NULL,
  write_iterations = NULL,
  .cwd = NULL,
  .env = NULL,
  .engine = NULL,
  .profile = NULL,
  dry_run = FALSE,
  echo = interactive()
)

Arguments

distance: Numeric. Distance in mm or fraction of cortical thickness Required.
in_file: Character; file path. Surface to expand Required.
args: Character. Additional parameters to the command
dt: Numeric. dt (implicit: 0.25)
nsurfaces: Integer. Number of surfacces to write during expansion
out_name: Character. Output surface file. If no path, uses directory of in_file. If no path AND missing "lh." or "rh.", derive from in_file
pial: Character. Name of pial file (implicit: "pial") If no path, uses directory of in_file If no path AND missing "lh." or "rh.", derive from in_file
smooth_averages: Integer. Smooth surface with N iterations after expansion
spring: Numeric. Spring term (implicit: 0.05)
thickness: Logical. Expand by fraction of cortical thickness, not mm
thickness_name: Character. Name of thickness file (implicit: "thickness") If no path, uses directory of in_file If no path AND missing "lh." or "rh.", derive from in_file
write_iterations: Integer. Write snapshots of expansion every N iterations
.cwd: Working directory override.
.env: Named character vector of environment variables.
.engine: Execution engine override.
.profile: Runtime profile override.
dry_run: Logical; preview command without executing.
echo: Logical; echo stdout/stderr in real time.

Value

An ni_result object.