fs_stats | R Documentation |
Extracts descriptive statistics, for the whole-brain and subcortical region-of-interests (ROI), within a FreeSurfer subjects directory. It reads them from the aseg.stats file, as generated by the default FreeSurfer preprocessing pipeline.
fs_stats(sdirpath = "./", sublist, ROImeasure = "Volume_mm3")
sdirpath |
A string object indicating the path to the 'FreeSurfer' subjects directory. Default is the current working directory ("./"). |
sublist |
A string object indicating the path to the subject list generated by SURFvextract as 'sublist.txt' (optional). This allows users to retrieve stats only from a selected list of subjects. The subject list is a list with 1 subject ID per line. |
ROImeasure |
A string object indicating what summary measure to extract for the subocrtical ROIs. Choices include: 'NVoxels', 'Volume_mm3', 'StructName', 'normMean', 'normStdDev', 'normMin', 'normMax', and 'normRange'. Default is 'Volume_mm3'. |
A data.frame object with N columns per aseg.stats measures and N row per subjects.
fs_stats(sdirpath="freesurfer_subjdir")
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