mne.read_surface#

mne.read_surface(fname, read_metadata=False, return_dict=False, file_format='auto', verbose=None)[source]#

Load a Freesurfer surface mesh in triangular format.

Parameters
fnamestr

The name of the file containing the surface.

read_metadatabool

Read metadata as key-value pairs. Only works when reading a FreeSurfer surface file. For .obj files this dictionary will be empty.

Valid keys:

  • ‘head’ : array of int

  • ‘valid’ : str

  • ‘filename’ : str

  • ‘volume’ : array of int, shape (3,)

  • ‘voxelsize’ : array of float, shape (3,)

  • ‘xras’ : array of float, shape (3,)

  • ‘yras’ : array of float, shape (3,)

  • ‘zras’ : array of float, shape (3,)

  • ‘cras’ : array of float, shape (3,)

New in version 0.13.0.

return_dictbool

If True, a dictionary with surface parameters is returned.

file_format‘auto’ | ‘freesurfer’ | ‘obj’

File format to use. Can be ‘freesurfer’ to read a FreeSurfer surface file, or ‘obj’ to read a Wavefront .obj file (common format for importing in other software), or ‘auto’ to attempt to infer from the file name. Defaults to ‘auto’.

New in version 0.21.0.

verbosebool | str | int | None

Control verbosity of the logging output. If None, use the default verbosity level. See the logging documentation and mne.verbose() for details. Should only be passed as a keyword argument.

Returns
rrarray, shape=(n_vertices, 3)

Coordinate points.

trisint array, shape=(n_faces, 3)

Triangulation (each line contains indices for three points which together form a face).

volume_infodict-like

If read_metadata is true, key-value pairs found in the geometry file.

surfdict

The surface parameters. Only returned if return_dict is True.

Examples using mne.read_surface#

Source alignment and coordinate frames

Source alignment and coordinate frames

Source alignment and coordinate frames
How MNE uses FreeSurfer's outputs

How MNE uses FreeSurfer’s outputs

How MNE uses FreeSurfer's outputs
Fixing BEM and head surfaces

Fixing BEM and head surfaces

Fixing BEM and head surfaces