mne.split_label¶
- mne.split_label(label, parts=2, subject=None, subjects_dir=None, freesurfer=False)[source]¶
Split a Label into two or more parts.
- Parameters
- label
Label
|str
Label which is to be split (Label object or path to a label file).
- parts
int
>= 2 |tuple
ofstr
A sequence of strings specifying label names for the new labels (from posterior to anterior), or the number of new labels to create (default is 2). If a number is specified, names of the new labels will be the input label’s name with div1, div2 etc. appended.
- subject
None
|str
Subject which this label belongs to (needed to locate surface file; should only be specified if it is not specified in the label).
- subjects_dir
str
|None
The path to the FreeSurfer subjects reconstructions. It corresponds to FreeSurfer environment variable
SUBJECTS_DIR
.- freesurferbool
By default (
False
)split_label
uses an algorithm that is slightly optimized for performance and numerical precision. Setfreesurfer
toTrue
in order to replicate label splits from FreeSurfer’smris_divide_parcellation
.
- label
- Returns
Notes
Works by finding the label’s principal eigen-axis on the spherical surface, projecting all label vertex coordinates onto this axis and dividing them at regular spatial intervals.