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import numpy as np | ||
from datetime import datetime | ||
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from ocf_datapipes.transform.numpy_batch import AddTrigonometricDateTime | ||
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from ocf_datapipes.transform.numpy_batch.datetime_features import _get_date_time_in_pi | ||
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def test_get_date_time_in_pi(): | ||
times = [ | ||
"2020-01-01T00:00:01", "2020-04-01T06:00:00", | ||
"2020-07-01T12:00:00", "2020-09-30T18:00:00", | ||
"2020-12-31T23:59:59", | ||
"2021-01-01T00:00:01", "2021-04-02T06:00:00", | ||
"2021-07-02T12:00:00", "2021-10-01T18:00:00", | ||
"2021-12-31T23:59:59" | ||
] | ||
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expected_times_in_pi = [0, 0.5*np.pi, np.pi, 1.5*np.pi, 2*np.pi]*2 | ||
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times = np.array([datetime.fromisoformat(time) for time in times], dtype="datetime64[s]") | ||
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date_in_pi, time_in_pi = _get_date_time_in_pi(times) | ||
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assert np.isclose(np.cos(time_in_pi), np.cos(expected_times_in_pi), atol=1e-04).all() | ||
assert np.isclose(np.sin(time_in_pi), np.sin(expected_times_in_pi), atol=1e-04).all() | ||
assert np.isclose(np.cos(date_in_pi), np.cos(expected_times_in_pi), atol=0.01).all() | ||
assert np.isclose(np.sin(date_in_pi), np.sin(expected_times_in_pi), atol=0.02).all() | ||
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def test_add_trigonometric_datetime(combined_datapipe): | ||
combined_datapipe = AddTrigonometricDateTime(combined_datapipe, modality_name="wind") | ||
data = next(iter(combined_datapipe)) | ||
assert data is not None |