get image data as numpy array.

affines

state. Image.save ensures that file name has an extension. MGHImage uses both
of these changes so that its initial save state is accurate, and when it
is saved, it is saved as a nifti

check data shape, and raise if bad.

files. Adjustment to gifti.relatedFiles.

used

the vertex set changes.

file path for vertex data key.

double-barrelled file extensions.

deprecation warning on access though.

nomenclature.

method to query current vertex set.