method to load .img without .hdr

[mrjeffs]

a clunky use case has arisen where only the .img portion of an analyze file is available.
i want to load the .img into nibabel and then fill in the missing parts of the header, eg affine, zooms, etc
reorient and save as nifti.
nib.load('file.img') gives 'cannot work out file type' error. what is a work around to avoid the missing .hdr

[effigies]

If you know the type, shape and affine of the data, you should just be able to create a numpy.memmap object:

import nibabel as nb
import numpy as np
dataobj = np.memmap('file.img', dtype=<dtype>, mode='r', shape=<shape>, order='F')
img = nb.Nifti1Image(dataobj, <affine>)

You can now fiddle with img.header.

[mrjeffs]

that worked great. thanks. issue closed. :-)