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BIDS extract JSON data

import nibabel as nb
import bids
layout = bids.BIDSLayout('/data/bids/ds003130-download/')
imgs = layout.get(extension='.nii.gz', datatype=['fmap', 'func'])
dirs = {"A": {"j": "PA", "j-": "AP"}}  # Truncated for simplicity
for bfile in imgs:
     img = bfile.get_image() 
     ornt = ''.join(nb.aff2axcodes(img.affine)) 
     md = bfile.get_metadata() 
     peaxis = md['PhaseEncodingDirection'] 
     pedir = dirs[ornt[1]][peaxis] 
     print(f"{bfile.filename:<46} {ornt} {peaxis:<3} {pedir}")

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BIDS extract JSON data

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