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test_seg2.py
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test_seg2.py
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# -*- coding: utf-8 -*-
"""
The obspy.io.seg2 test suite.
"""
from __future__ import (absolute_import, division, print_function,
unicode_literals)
from future.builtins import * # NOQA
import gzip
import os
import unittest
import warnings
import numpy as np
from obspy import read
TRACE2_HEADER = {'ACQUISITION_DATE': '07/JAN/2013',
'ACQUISITION_DATE_UTC': '07/JAN/2013',
'ACQUISITION_TIME': '10:30:41',
'ACQUISITION_TIME_MICROSECONDS': '0',
'ACQUISITION_TIME_MICROSECONDS_UTC': '0',
'ACQUISITION_TIME_UTC': '09:30:41',
'APPLIED_STANDARD': '0',
'BATTERY_LEVEL': '99 0 30.35 4.123',
'CHANNEL_NUMBER': '1',
'CLIENT': 'CLIENT',
'CLOCK_SOURCE': '1',
'COMPANY': 'COMPANY',
'DESCALING_FACTOR': '2.17378e-05',
'DEVICE_NAME': 'VIPA 15',
'DEVICE_SERIAL_NO': '01-0000143912a3',
'DIFFERENCE_TO_REAL_TIME': '0.000000',
'FIRMWARE_VERSION': '0.0.125',
'FIRST_SAMPLE_NO': '8000',
'HIGH_CUT_FILTER': '0 0',
'INSTRUMENT': 'DMT_VIPA_01-0000143912a3',
'LAST_SAMPLE_NO': '9999',
'LOCATION': 'LOCATION',
'LOW_CUT_FILTER': '10.000000 12.000000',
'NETWORK_NAME': 'BANK',
'NOTE': ['Comment'],
'OBSERVER': 'OBSERVER',
'REAL_TIME_AVAILABLE': 'FALSE',
'REGISTRATION_DIRECTION': 'X',
'SAMPLE_INTERVAL': '0.00100000',
'SCALE_UNIT': 'mm/s',
'SECONDS_SINCE_LAST_GPS_SYNC': '-1',
'SENSOR_CALIB_DATE': '21/8/12',
'SENSOR_FC': '4.500000',
'SENSOR_TYPE_ID': '1',
'SENSOR_TYPE_NAME': 'DMT-3D/DIN',
'STATION_CODE': 'BA1',
'STATION_NAME': 'DMT-BANK',
'SYSTEM_T0': '0',
'TIME_ZONE': 'CET',
'TRACE_TYPE': 'SEISMIC_DATA',
'TRIGGER_LEVEL': '2.00000000',
'TRIGGER_SAMPLE_NO': '8000',
'TRIGGER_SOURCE': '0',
'UNITS': 'METERS'}
TRACE3_HEADER = {
'ACQUISITION_DATE': '7/MAR/2018',
'ACQUISITION_TIME': '3:12:45',
'INSTRUMENT': 'GEOMETRICS SmartSeis 0000',
'TRACE_SORT': 'AS_ACQUIRED',
'UNITS': 'METERS',
'NOTE': ['DISPLAY_SCALE 48'],
'CHANNEL_NUMBER': '1',
'DELAY': '-0.010',
'DESCALING_FACTOR': '0.001199',
'LINE_ID': '00-00',
'LOW_CUT_FILTER': '0 0',
'NOTCH_FREQUENCY': '0',
'RAW_RECORD': '1068.DAT',
'RECEIVER_LOCATION': '1004.00',
'SAMPLE_INTERVAL': '0.000125',
'SKEW': '-0.00001796',
'SOURCE_LOCATION': '1000.00',
'STACK': '8',
}
class SEG2TestCase(unittest.TestCase):
"""
Test cases for SEG2 reading.
"""
def setUp(self):
# directory where the test files are located
self.dir = os.path.dirname(__file__)
self.path = os.path.join(self.dir, 'data')
def test_read_data_format_2(self):
"""
Test reading a SEG2 data format code 2 file (int32).
"""
basename = os.path.join(self.path,
'20130107_103041000.CET.3c.cont.0')
# read SEG2 data (in counts, int32)
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter('always')
st = read(basename + ".seg2.gz")
self.assertEqual(len(w), 1)
self.assertIn('custom', str(w[0]))
# read reference ASCII data (in micrometer/s)
with gzip.open(basename + ".DAT.gz", 'rb') as f:
results = np.loadtxt(f).T
# test all three components
for tr, result in zip(st, results):
# convert raw data to micrometer/s (descaling goes to mm/s)
scaled_data = tr.data * float(tr.stats.seg2.DESCALING_FACTOR) * 1e3
self.assertTrue(np.allclose(scaled_data, result, rtol=1e-7,
atol=1e-7))
# test seg2 specific header values
# (trace headers include SEG2 file header)
self.assertEqual(st[0].stats.seg2, TRACE2_HEADER)
def test_read_data_format_3(self):
"""
Test reading a SEG2 data format code 3 file (20-bit floating point).
"""
basename = os.path.join(self.path,
'20180307_031245000.0')
# read SEG2 data (in counts, int32)
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter('always')
st = read(basename + ".seg2")
self.assertEqual(len(w), 2)
self.assertIn('custom', str(w[1]))
# read reference ASCII data
with gzip.open(basename + '.DAT.gz', 'rb') as f:
results = np.loadtxt(f, ndmin=2).T
for tr, result in zip(st, results):
# convert raw data to unit'd
scaled_data = tr.data * tr.stats.calib
np.testing.assert_allclose(scaled_data, result,
rtol=1e-7, atol=1e-7)
# test seg2 specific header values
# (trace headers include SEG2 file header)
self.assertEqual(st[0].stats.seg2, TRACE3_HEADER)
def suite():
return unittest.makeSuite(SEG2TestCase, 'test')
if __name__ == '__main__':
unittest.main(defaultTest='suite')