This page is a reference documentation. It only explains the function signature, and not how to use it. Please refer to the user guide for the big picture.
Get the image data as a
- imgNiimg-like object or iterable of Niimg-like objects
3D or 4D numpy array depending on the shape of img. This function preserves the type of the image data. If img is an in-memory Nifti image it returns the image data array itself – not a copy.