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FIX: Delay access of nibabel.trackvis until actually needed #3488

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Merged
merged 1 commit into from
Jul 12, 2022
Merged

FIX: Delay access of nibabel.trackvis until actually needed #3488

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8 changes: 3 additions & 5 deletions nipype/interfaces/mrtrix/convert.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3,9 +3,7 @@
# vi: set ft=python sts=4 ts=4 sw=4 et:
import os.path as op
import nibabel as nb
import nibabel.trackvis as trk
import numpy as np
from nibabel.trackvis import HeaderError
from nibabel.volumeutils import native_code
from nibabel.orientations import aff2axcodes

Expand Down Expand Up @@ -120,7 +118,7 @@ def track_gen(track_points):
nan_str = fileobj.read(bytesize)
if len(pts_str) < (n_pts * bytesize):
if not n_streams == stream_count:
raise HeaderError(
raise nb.trackvis.HeaderError(
"Expecting %s points, found only %s" % (stream_count, n_streams)
)
iflogger.error(
Expand Down Expand Up @@ -255,7 +253,7 @@ def _run_interface(self, runtime):

final_streamlines = transform_tracking_output(transformed_streamlines, aff)
trk_tracks = ((ii, None, None) for ii in final_streamlines)
trk.write(out_filename, trk_tracks, trk_header)
nb.trackvis.write(out_filename, trk_tracks, trk_header)
iflogger.info("Saving transformed Trackvis file as %s", out_filename)
iflogger.info("New TrackVis Header:")
iflogger.info(trk_header)
Expand All @@ -271,7 +269,7 @@ def _run_interface(self, runtime):
streamlines, trk_header, affine
)
trk_tracks = ((ii, None, None) for ii in transformed_streamlines)
trk.write(out_filename, trk_tracks, trk_header)
nb.trackvis.write(out_filename, trk_tracks, trk_header)
iflogger.info("Saving Trackvis file as %s", out_filename)
iflogger.info("TrackVis Header:")
iflogger.info(trk_header)
Expand Down