def test_relcal_sts2_vs_unknown(self):
"""
Test relative calibration of unknown instrument vs STS2 in the same
time range. Window length is set to 20 s, smoothing rate to 10.
"""
st1 = read(os.path.join(self.path, 'ref_STS2'))
st2 = read(os.path.join(self.path, 'ref_unknown'))
calfile = os.path.join(self.path, 'STS2_simp.cal')
freq, amp, phase = relcalstack(st1, st2, calfile, 20, smooth=10,
save_data=False)
# read in the reference responses
un_resp = np.loadtxt(os.path.join(self.path, 'unknown.resp'))
kn_resp = np.loadtxt(os.path.join(self.path, 'STS2.refResp'))
# test if freq, amp and phase match the reference values
np.testing.assert_array_almost_equal(freq, un_resp[:, 0],
decimal=4)
np.testing.assert_array_almost_equal(freq, kn_resp[:, 0],
decimal=4)
np.testing.assert_array_almost_equal(amp, un_resp[:, 1],
decimal=4)
np.testing.assert_array_almost_equal(phase, un_resp[:, 2],
decimal=4)
def test_relcalUsingTraces(self):
"""
Tests using traces instead of stream objects as input parameters.
"""
st1 = read(os.path.join(self.path, 'ref_STS2'))
st2 = read(os.path.join(self.path, 'ref_unknown'))
calfile = os.path.join(self.path, 'STS2_simp.cal')
# stream
freq, amp, phase = relcalstack(st1, st2, calfile, 20, smooth=10,
save_data=False)
# traces
freq2, amp2, phase2 = relcalstack(st1[0], st2[0], calfile, 20,
smooth=10, save_data=False)
np.testing.assert_array_almost_equal(freq, freq2, decimal=4)
np.testing.assert_array_almost_equal(amp, amp2, decimal=4)
np.testing.assert_array_almost_equal(phase, phase2, decimal=4)
def test_relcal_sts2_vs_unknown(self):
"""
Test relative calibration of unknown instrument vs STS2 in the same
time range. Window length is set to 20 s, smoothing rate to 10.
"""
st1 = read(os.path.join(self.path, 'ref_STS2'))
st2 = read(os.path.join(self.path, 'ref_unknown'))
calfile = os.path.join(self.path, 'STS2_simp.cal')
freq, amp, phase = relcalstack(st1,
st2,
calfile,
20,
smooth=10,
save_data=False)
# read in the reference responses
un_resp = np.loadtxt(os.path.join(self.path, 'unknown.resp'))
kn_resp = np.loadtxt(os.path.join(self.path, 'STS2.refResp'))
# test if freq, amp and phase match the reference values
np.testing.assert_array_almost_equal(freq, un_resp[:, 0], decimal=4)
np.testing.assert_array_almost_equal(freq, kn_resp[:, 0], decimal=4)
np.testing.assert_array_almost_equal(amp, un_resp[:, 1], decimal=4)
np.testing.assert_array_almost_equal(phase, un_resp[:, 2], decimal=4)
def test_relcalUsingTraces(self):
"""
Tests using traces instead of stream objects as input parameters.
"""
st1 = read(os.path.join(self.path, 'ref_STS2'))
st2 = read(os.path.join(self.path, 'ref_unknown'))
calfile = os.path.join(self.path, 'STS2_simp.cal')
# stream
freq, amp, phase = relcalstack(st1,
st2,
calfile,
20,
smooth=10,
save_data=False)
# traces
freq2, amp2, phase2 = relcalstack(st1[0],
st2[0],
calfile,
20,
smooth=10,
save_data=False)
np.testing.assert_array_almost_equal(freq, freq2, decimal=4)
np.testing.assert_array_almost_equal(amp, amp2, decimal=4)
np.testing.assert_array_almost_equal(phase, phase2, decimal=4)
def test_relcal_sts2_vs_unknown(self):
"""
Test relative calibration of unknown instrument vs STS2 in the same
time range. Window length is set to 20 s, smoothing rate to 10.
"""
st1 = read(os.path.join(self.path, 'ref_STS2'))
st2 = read(os.path.join(self.path, 'ref_unknown'))
calfile = os.path.join(self.path, 'STS2_simp.cal')
freq, amp, phase = relcalstack(st1,
st2,
calfile,
20,
smooth=10,
save_data=False)
# read in the reference responses
un_resp = np.loadtxt(os.path.join(self.path, 'unknown.resp'))
kn_resp = np.loadtxt(os.path.join(self.path, 'STS2.refResp'))
# bug resolved with 2f9876d, arctan was used which maps to
# [-pi/2, pi/2]. arctan2 or np.angle shall be used instead
# correct the test data by hand
un_resp[:, 2] = np.unwrap(un_resp[:, 2] * 2) / 2
if False:
import matplotlib.pyplot as plt
plt.plot(freq, un_resp[:, 2], 'b', label='reference', alpha=.8)
plt.plot(freq, phase, 'r', label='new', alpha=.8)
plt.xlim(-10, None)
plt.legend()
plt.show()
# test if freq, amp and phase match the reference values
np.testing.assert_array_almost_equal(freq, un_resp[:, 0], decimal=4)
np.testing.assert_array_almost_equal(freq, kn_resp[:, 0], decimal=4)
np.testing.assert_array_almost_equal(amp, un_resp[:, 1], decimal=4)
# TODO: unkown why the first frequency mismatches so much
np.testing.assert_array_almost_equal(phase[1:],
un_resp[1:, 2],
decimal=4)
def test_relcal_sts2_vs_unknown(self):
"""
Test relative calibration of unknown instrument vs STS2 in the same
time range. Window length is set to 20 s, smoothing rate to 10.
"""
st1 = read(os.path.join(self.path, 'ref_STS2'))
st2 = read(os.path.join(self.path, 'ref_unknown'))
calfile = os.path.join(self.path, 'STS2_simp.cal')
freq, amp, phase = relcalstack(st1, st2, calfile, 20, smooth=10,
save_data=False)
# read in the reference responses
un_resp = np.loadtxt(os.path.join(self.path, 'unknown.resp'))
kn_resp = np.loadtxt(os.path.join(self.path, 'STS2.refResp'))
# bug resolved with 2f9876d, arctan was used which maps to
# [-pi/2, pi/2]. arctan2 or np.angle shall be used instead
# correct the test data by hand
un_resp[:, 2] = np.unwrap(un_resp[:, 2] * 2) / 2
if False:
import matplotlib.pyplot as plt
plt.plot(freq, un_resp[:, 2], 'b', label='reference', alpha=.8)
plt.plot(freq, phase, 'r', label='new', alpha=.8)
plt.xlim(-10, None)
plt.legend()
plt.show()
# test if freq, amp and phase match the reference values
np.testing.assert_array_almost_equal(freq, un_resp[:, 0],
decimal=4)
np.testing.assert_array_almost_equal(freq, kn_resp[:, 0],
decimal=4)
np.testing.assert_array_almost_equal(amp, un_resp[:, 1],
decimal=4)
# TODO: unknown why the first frequency mismatches so much
np.testing.assert_array_almost_equal(phase[1:], un_resp[1:, 2],
decimal=4)
st1 = read('%s/%s'%(cwd,known))
st1.merge()
st2 = read('%s/%s'%(cwd,unknown))
st2.merge()
st = UTCDateTime(start)
ed = UTCDateTime(end)
st1.trim(st,ed)
st2.trim(st,ed)
print st1
print st2
calfile = "%s/%s"%(cwd,calfile)
freq, amp, phase = calibration.relcalstack(st1, st2, calfile, window, overlap_frac=0.5,smooth=sxm)
# plot
fig = plt.figure()
# make a little extra space between the subplots
plt.subplots_adjust(hspace=0.5)
ax1 = plt.subplot(211)
ax1.loglog(freq, amp)
ax1.set_xlabel('Frequency [Hz]')
ax1.set_ylabel('Amplitude')
ax1.set_xlim(1,100)
ax1.set_title('unknown transfer function')
ax2 = plt.subplot(212)
ax2.semilogx(freq, phase)
ax2.set_xlim(1,100)
ax2.set_xlabel('Frequency [Hz]')
import os
from obspy.core import read
from obspy.signal.calibration import relcalstack
import matplotlib.pyplot as plt
cwd = os.getcwd()
st1 = read('%s/CA.STS2..EHZ.D.2011.046.2h' % (cwd))
st2 = read('%s/CA.0438..EHZ.D.2011.046.2h' % (cwd))
#st1 = read('%s/mb_new'%(cwd))
#st2 = read('%s/w_new'%(cwd))
#calfile = "%s/MB2005_simp.cal"%(cwd)
calfile = "%s/STS2_simp.cal" % (cwd)
freq, amp, phase = relcalstack(st1, st2, calfile, 600, smooth=0)
# plot
fig = plt.figure()
# make a little extra space between the subplots
plt.subplots_adjust(hspace=0.5)
ax1 = plt.subplot(211)
ax1.loglog(freq, amp)
ax1.set_xlabel('Frequency [Hz]')
ax1.set_ylabel('Amplitude')
ax1.set_title('unknown transfer function')
ax2 = plt.subplot(212)
ax2.semilogx(freq, phase)
ax2.set_xlabel('Frequency [Hz]')
ax2.set_ylabel('Phase [rad]')
from obspy.core import read
from obspy.signal.calibration import relcalstack
import matplotlib.pyplot as plt
cwd = os.getcwd()
st1 = read('%s/CA.STS2..EHZ.D.2011.046.2h'%(cwd))
st2 = read('%s/CA.0438..EHZ.D.2011.046.2h'%(cwd))
#st1 = read('%s/mb_new'%(cwd))
#st2 = read('%s/w_new'%(cwd))
#calfile = "%s/MB2005_simp.cal"%(cwd)
calfile = "%s/STS2_simp.cal"%(cwd)
freq, amp, phase = relcalstack(st1, st2, calfile, 600, smooth=0)
# plot
fig = plt.figure()
# make a little extra space between the subplots
plt.subplots_adjust(hspace=0.5)
ax1 = plt.subplot(211)
ax1.loglog(freq, amp)
ax1.set_xlabel('Frequency [Hz]')
ax1.set_ylabel('Amplitude')
ax1.set_title('unknown transfer function')
ax2 = plt.subplot(212)
ax2.semilogx(freq, phase)
ax2.set_xlabel('Frequency [Hz]')
ax2.set_ylabel('Phase [rad]')