def test_crop_when_negative_orig_time(windows_like_datetime):
"""Test cropping with orig_time, tmin and tmax previous to 1970."""
# Regression test for gh-6621
orig_time_stamp = -908196945.011331 # 1941-03-22 11:04:14.988669
annot = Annotations(description='foo',
onset=np.arange(0, 0.999, 0.1),
duration=[0],
orig_time=orig_time_stamp)
stamp = _dt_to_stamp(annot.orig_time)
assert_allclose(stamp[0] + stamp[1] * 1e-6, orig_time_stamp)
t = stamp[0] + stamp[1] * 1e-6
assert t == orig_time_stamp
assert len(annot) == 10
# do not raise
annot.crop(verbose='debug')
assert len(annot) == 10
# Crop with negative tmin, tmax
tmin, tmax = [orig_time_stamp + t for t in (0.25, .75)]
assert tmin < 0 and tmax < 0
crop_annot = annot.crop(tmin=tmin, tmax=tmax)
assert_allclose(crop_annot.onset, [0.3, 0.4, 0.5, 0.6, 0.7])
orig_dt = _stamp_to_dt(stamp)
assert crop_annot.orig_time == orig_dt # orig_time does not change
def test_crop_when_negative_orig_time():
"""Test croping with orig_time, tmin and tmax previous to 1970."""
# Regression test for gh-6621
orig_time_stamp = -908196945.011331 # 1941-03-22 11:04:14.988669
annot = Annotations(description='foo',
onset=np.arange(0, 1, 0.1),
duration=[0],
orig_time=orig_time_stamp)
assert annot.orig_time == orig_time_stamp
# do not raise
annot.crop()
# Crop with negative tmin, tmax
tmin, tmax = [orig_time_stamp + t for t in (0.25, .75)]
assert tmin < 0 and tmax < 0
crop_annot = annot.crop(tmin=tmin, tmax=tmax)
assert_allclose(crop_annot.onset, [0.3, 0.4, 0.5, 0.6, 0.7])
assert crop_annot.orig_time == orig_time_stamp # orig_time does not change
def test_crop():
"""Test cropping with annotations."""
raw = read_raw_fif(fif_fname)
events = mne.find_events(raw)
onset = events[events[:, 2] == 1, 0] / raw.info['sfreq']
duration = np.full_like(onset, 0.5)
description = ['bad %d' % k for k in range(len(onset))]
annot = mne.Annotations(onset,
duration,
description,
orig_time=raw.info['meas_date'])
raw.set_annotations(annot)
split_time = raw.times[-1] / 2. + 2.
split_idx = len(onset) // 2 + 1
raw_cropped_left = raw.copy().crop(0., split_time - 1. / raw.info['sfreq'])
assert_array_equal(raw_cropped_left.annotations.description,
raw.annotations.description[:split_idx])
assert_allclose(raw_cropped_left.annotations.duration,
raw.annotations.duration[:split_idx])
assert_allclose(raw_cropped_left.annotations.onset,
raw.annotations.onset[:split_idx])
raw_cropped_right = raw.copy().crop(split_time, None)
assert_array_equal(raw_cropped_right.annotations.description,
raw.annotations.description[split_idx:])
assert_allclose(raw_cropped_right.annotations.duration,
raw.annotations.duration[split_idx:])
assert_allclose(raw_cropped_right.annotations.onset,
raw.annotations.onset[split_idx:])
raw_concat = mne.concatenate_raws([raw_cropped_left, raw_cropped_right],
verbose='debug')
assert_allclose(raw_concat.times, raw.times)
assert_allclose(raw_concat[:][0], raw[:][0], atol=1e-20)
assert_and_remove_boundary_annot(raw_concat)
# Ensure we annotations survive round-trip crop->concat
assert_array_equal(raw_concat.annotations.description,
raw.annotations.description)
for attr in ('onset', 'duration'):
assert_allclose(getattr(raw_concat.annotations, attr),
getattr(raw.annotations, attr),
err_msg='Failed for %s:' % (attr, ))
raw.set_annotations(None) # undo
# Test concatenating annotations with and without orig_time.
raw2 = raw.copy()
raw.set_annotations(Annotations([45.], [3], 'test', raw.info['meas_date']))
raw2.set_annotations(Annotations([2.], [3], 'BAD', None))
expected_onset = [45., 2. + raw._last_time]
raw = concatenate_raws([raw, raw2])
assert_and_remove_boundary_annot(raw)
assert_array_almost_equal(raw.annotations.onset, expected_onset, decimal=2)
# Test IO
tempdir = _TempDir()
fname = op.join(tempdir, 'test-annot.fif')
raw.annotations.save(fname)
annot_read = read_annotations(fname)
for attr in ('onset', 'duration', 'orig_time'):
assert_allclose(getattr(annot_read, attr),
getattr(raw.annotations, attr))
assert_array_equal(annot_read.description, raw.annotations.description)
annot = Annotations((), (), ())
annot.save(fname)
pytest.raises(IOError, read_annotations, fif_fname) # none in old raw
annot = read_annotations(fname)
assert isinstance(annot, Annotations)
assert len(annot) == 0
annot.crop() # test if cropping empty annotations doesn't raise an error
# Test that empty annotations can be saved with an object
fname = op.join(tempdir, 'test_raw.fif')
raw.set_annotations(annot)
raw.save(fname)
raw_read = read_raw_fif(fname)
assert isinstance(raw_read.annotations, Annotations)
assert len(raw_read.annotations) == 0
raw.set_annotations(None)
raw.save(fname, overwrite=True)
raw_read = read_raw_fif(fname)
assert raw_read.annotations is not None # XXX to be fixed in #5416
assert len(raw_read.annotations.onset) == 0 # XXX to be fixed in #5416