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Support ushort for the mgh/mgz reader #1415

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Merged
merged 4 commits into from
May 16, 2025
Merged

Support ushort for the mgh/mgz reader #1415

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d085556
adds ushort to the mgz reader
bthyreau May 14, 2025
dd17469
Update nibabel/freesurfer/mghformat.py
bthyreau May 15, 2025
e03cacc
add a comment regarding datatype support
bthyreau May 16, 2025
643f7a1
TEST: mgz should fail on f64, no more fail on u16
bthyreau May 16, 2025
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3 changes: 2 additions & 1 deletion nibabel/freesurfer/mghformat.py
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Expand Up @@ -59,9 +59,10 @@
# caveat 2: Note that the bytespervox you get is in str ( not an int)
_dtdefs = ( # code, conversion function, dtype, bytes per voxel
(0, 'uint8', '>u1', '1', 'MRI_UCHAR', np.uint8, np.dtype('u1'), np.dtype('>u1')),
(4, 'int16', '>i2', '2', 'MRI_SHORT', np.int16, np.dtype('i2'), np.dtype('>i2')),
(1, 'int32', '>i4', '4', 'MRI_INT', np.int32, np.dtype('i4'), np.dtype('>i4')),
(3, 'float', '>f4', '4', 'MRI_FLOAT', np.float32, np.dtype('f4'), np.dtype('>f4')),
(4, 'int16', '>i2', '2', 'MRI_SHORT', np.int16, np.dtype('i2'), np.dtype('>i2')),
(10, 'uint16', '>u2', '2', 'MRI_USHRT', np.uint16, np.dtype('u2'), np.dtype('>u2')),
)

# make full code alias bank, including dtype column
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