def test_get_obs_from_obs():
"""StreamConverter_test.test_get_obs_from_obs()
The observatory stream can contain either ''d'' or ''e'' depending
on it's source. get_obs_from_obs will return either or both as part
of the obs Stream.
"""
# 1) Call get_obs_from_obs using a decbas of 15, a H stream of
# [cos(15), cos(30)], and a E stream of [sin(15), sin(30)].
# Expect a D stream of [15 degrees, 30 degrees]
obs_e = obspy.core.Stream()
DECBAS = 15 * D2I
obs_e += __create_trace('H', [cos(15 * D2R), cos(30 * D2R)], DECBAS)
obs_e += __create_trace('E', [sin(15 * D2R), sin(30 * D2R)], DECBAS)
obs_e += __create_trace('Z', [1, 1], DECBAS)
obs_e += __create_trace('F', [1, 1], DECBAS)
obs_D = StreamConverter.get_obs_from_obs(obs_e, False, True)
d = obs_D.select(channel='D')[0].data
assert_almost_equal(d, [15 * D2R, 30 * D2R], 9,
'Expect D to equal [15 degrees, 30 degrees]', True)
# 2) Call get_obs_from_obs using a decbase of 15 degrees, a H stream of
# [cos(15), cos(30)], and a D stream of [15, 30].
# Expect a D stream of [sin(15), sin(30)]
obs_d = obspy.core.Stream()
obs_d += __create_trace('H', [cos(15 * D2R), cos(30 * D2R)], DECBAS)
obs_d += __create_trace('D', [15 * D2R, 30 * D2R], DECBAS)
obs_d += __create_trace('Z', [1, 1], DECBAS)
obs_d += __create_trace('F', [1, 1], DECBAS)
obs_E = StreamConverter.get_obs_from_obs(obs_d, True, False)
e = obs_E.select(channel='E')[0].data
assert_almost_equal(e, [sin(15 * D2R), sin(30 * D2R)], 9,
'Expect E to equal [sin(15), sin(30)', True)
def test_get_obs_from_obs():
"""StreamConverter_test.test_get_obs_from_obs()
The observatory stream can contain either ''d'' or ''e'' depending
on it's source. get_obs_from_obs will return either or both as part
of the obs Stream.
"""
# 1) Call get_obs_from_obs using a decbas of 15, a H stream of
# [cos(15), cos(30)], and a E stream of [sin(15), sin(30)].
# Expect a D stream of [15 degrees, 30 degrees]
obs_e = obspy.core.Stream()
DECBAS = 15 * D2I
obs_e += __create_trace('H', [cos(15 * D2R), cos(30 * D2R)], DECBAS)
obs_e += __create_trace('E', [sin(15 * D2R), sin(30 * D2R)], DECBAS)
obs_e += __create_trace('Z', [1, 1], DECBAS)
obs_e += __create_trace('F', [1, 1], DECBAS)
obs_D = StreamConverter.get_obs_from_obs(obs_e, False, True)
d = obs_D.select(channel='D')[0].data
assert_almost_equal(d, [15 * D2R, 30 * D2R], 9,
'Expect D to equal [15 degrees, 30 degrees]', True)
# 2) Call get_obs_from_obs using a decbase of 15 degrees, a H stream of
# [cos(15), cos(30)], and a D stream of [15, 30].
# Expect a D stream of [sin(15), sin(30)]
obs_d = obspy.core.Stream()
obs_d += __create_trace('H', [cos(15 * D2R), cos(30 * D2R)], DECBAS)
obs_d += __create_trace('D', [15 * D2R, 30 * D2R], DECBAS)
obs_d += __create_trace('Z', [1, 1], DECBAS)
obs_d += __create_trace('F', [1, 1], DECBAS)
obs_E = StreamConverter.get_obs_from_obs(obs_d, True, False)
e = obs_E.select(channel='E')[0].data
assert_almost_equal(e, [sin(15 * D2R), sin(30 * D2R)], 9,
'Expect E to equal [sin(15), sin(30)', True)
def test_verification_data():
"""StreamConverter_test.test_verification_data()
This is a verification test of data done with different
converters, to see if the same result is returned.
Since the small angle approximation was used in the other
converters, AND round off was done differently, we can't
get the exact results.
Change the precision in assert_almost_equal to larger precision
(ie 2 to 8) to see how off the data is. Most are well within
expectations.
"""
DECBAS = 552.7
obs_v = obspy.core.Stream()
obs_v += __create_trace(
"H", [20889.55, 20889.57, 20889.74, 20889.86, 20889.91, 20889.81],
DECBAS)
obs_v += __create_trace("E",
[-21.10, -20.89, -20.72, -20.57, -20.39, -20.12],
DECBAS)
obs_v += __create_trace(
"Z", [47565.29, 47565.34, 47565.39, 47565.45, 47565.51, 47565.54],
DECBAS)
obs_v += __create_trace(
"F", [52485.77, 52485.84, 52485.94, 52486.06, 52486.11, 52486.10],
DECBAS)
obs_V = StreamConverter.get_obs_from_obs(obs_v, True, True)
d = obs_V.select(channel="D")[0].data
d = ChannelConverter.get_minutes_from_radians(d)
# Using d values calculated using small angle approximation.
assert_almost_equal(
d,
[-3.47, -3.43, -3.40, -3.38, -3.35, -3.31],
2,
"Expect d to equal [-3.47, -3.43, -3.40, -3.38, -3.35, -3.31]",
True,
)
mag = obspy.core.Stream()
DECBAS = 552.7
mag += __create_trace(
"H", [20884.04, 20883.45, 20883.38, 20883.43, 20883.07, 20882.76],
DECBAS)
d = ChannelConverter.get_radians_from_minutes(
[556.51, 556.52, 556.56, 556.61, 556.65, 556.64])
mag += __create_trace("D", d, DECBAS)
mag += __create_trace(
"Z", [48546.90, 48546.80, 48546.80, 48546.70, 48546.80, 48546.90],
DECBAS)
mag += __create_trace("F", [0.10, 0.00, 0.10, 0.00, 0.00, 0.00, 0.00],
DECBAS)
geo = StreamConverter.get_geo_from_mag(mag)
X = geo.select(channel="X")[0].data
Y = geo.select(channel="Y")[0].data
assert_almost_equal(
X, [20611.00, 20610.40, 20610.30, 20610.30, 20609.90, 20609.60], 2)
assert_almost_equal(Y,
[3366.00, 3366.00, 3366.20, 3366.50, 3366.70, 3366.60],
1)
def test_verification_data():
"""StreamConverter_test.test_verification_data()
This is a verification test of data done with different
converters, to see if the same result is returned.
Since the small angle approximation was used in the other
converters, AND round off was done differently, we can't
get the exact results.
Change the precision in assert_almost_equal to larger precision
(ie 2 to 8) to see how off the data is. Most are well within
expectations.
"""
DECBAS = 552.7
obs_v = obspy.core.Stream()
obs_v += __create_trace('H',
[20889.55, 20889.57, 20889.74, 20889.86, 20889.91, 20889.81], DECBAS)
obs_v += __create_trace('E',
[-21.10, -20.89, -20.72, -20.57, -20.39, -20.12], DECBAS)
obs_v += __create_trace('Z',
[47565.29, 47565.34, 47565.39, 47565.45, 47565.51, 47565.54], DECBAS)
obs_v += __create_trace('F',
[52485.77, 52485.84, 52485.94, 52486.06, 52486.11, 52486.10], DECBAS)
obs_V = StreamConverter.get_obs_from_obs(obs_v, True, True)
d = obs_V.select(channel='D')[0].data
d = ChannelConverter.get_minutes_from_radians(d)
# Using d values calculated using small angle approximation.
assert_almost_equal(d,
[-3.47, -3.43, -3.40, -3.38, -3.35, -3.31], 2,
'Expect d to equal [-3.47, -3.43, -3.40, -3.38, -3.35, -3.31]', True)
mag = obspy.core.Stream()
DECBAS = 552.7
mag += __create_trace('H',
[20884.04, 20883.45, 20883.38, 20883.43, 20883.07, 20882.76], DECBAS)
d = ChannelConverter.get_radians_from_minutes(
[556.51, 556.52, 556.56, 556.61, 556.65, 556.64])
mag += __create_trace('D', d, DECBAS)
mag += __create_trace('Z',
[48546.90, 48546.80, 48546.80, 48546.70, 48546.80, 48546.90], DECBAS)
mag += __create_trace('F',
[0.10, 0.00, 0.10, 0.00, 0.00, 0.00, 0.00], DECBAS)
geo = StreamConverter.get_geo_from_mag(mag)
X = geo.select(channel='X')[0].data
Y = geo.select(channel='Y')[0].data
assert_almost_equal(X,
[20611.00, 20610.40, 20610.30, 20610.30, 20609.90, 20609.60], 2)
assert_almost_equal(Y,
[3366.00, 3366.00, 3366.20, 3366.50, 3366.70, 3366.60], 1)
def test_get_geo_from_mag():
"""StreamConverter_test.test_get_geo_from_mag()
The magnetic north stream containing the traces ''h'', ''d'', ''z'', and
''f'' converts to the geographics stream containing the traces ''x'',
''y'', ''z'' and ''f''
"""
mag = obspy.core.Stream()
# Call get_geo_from_magusing a decbas of 15 degrees, and streams with
# H = [1, 1], and D = [15 degrees, 30 degrees], expect streams of
# X = [cos(15), cos(30)] and Y = [sin(15), sin(30)]
# stats.DECBAS = 15 * D2I
mag += __create_trace("H", [1, 1])
mag += __create_trace("D", [15 * D2R, 30 * D2R])
mag += __create_trace("Z", [1, 1])
mag += __create_trace("F", [1, 1])
geo = StreamConverter.get_geo_from_mag(mag)
X = geo.select(channel="X")[0].data
Y = geo.select(channel="Y")[0].data
assert_almost_equal(
X,
[cos(15 * D2R), cos(30 * D2R)],
9,
"Expect X to equal [cos(15), cos(30)]",
True,
)
assert_almost_equal(
Y,
[sin(15 * D2R), sin(30 * D2R)],
9,
"Expect Y to equal [sin(15), sin(30)]",
True,
)
def test_get_obs_from_mag():
"""StreamConverter_test.test_get_obs_from_mag()
The magnetic stream containing the traces ''h'', ''d'', ''z'', and ''f''
converts to the observatory stream containing the traces
''h'', ''e'' and/or ''d'', ''z'', and ''f''
"""
mag = obspy.core.Stream()
# Call get_obs_from_mag using a decbas of 15, a H stream of [1,1],
# and a D stream of [30 degrees, 45 degrees]. Expect a H stream
# of [cos(15), cos(30)], a D stream of [30 degrees, 45 degrees],
# and a E stream of [sin(15), sin(30)]
DECBAS = 15 * D2I
mag += __create_trace('H', [1, 1], DECBAS)
mag += __create_trace('D', [30 * D2R, 45 * D2R], DECBAS)
mag += __create_trace('Z', [1, 1], DECBAS)
mag += __create_trace('F', [1, 1], DECBAS)
obs = StreamConverter.get_obs_from_mag(mag, True)
H = obs.select(channel='H')[0].data
D = obs.select(channel='D')[0].data
E = obs.select(channel='E')[0].data
assert_almost_equal(H, [cos(15 * D2R), cos(30 * D2R)], 9,
'Expect H to equal [cos(15), cos(30)', True)
assert_almost_equal(D, [15 * D2R, 30 * D2R], 9,
'Expect D to equal [15 degrees, 30 degrees', True)
assert_almost_equal(E, [sin(15 * D2R), sin(30 * D2R)], 9,
'Expect E to equal [sin(15), sin(30)', True)
def test_get_obs_from_geo():
"""StreamConverter_test.test_get_obs_from_geo()
The geographic stream containing the traces ''x'', ''y'', ''z'', and
''f'' converts to the observatory stream containing the traces
''h'', ''d'' or ''e'', ''z'', and ''f''.
"""
geo = obspy.core.Stream()
# Call get_geo_from_obs using a decbas of 15, a X stream of
# [cos(30), cos(45)], and a Y stream of [sin(30), sin(45)].
# Expect a H stream of [cos(15), cos(30)] and a
# E stream of [sin(15), sin(30)]
DECBAS = 15 * D2I
geo += __create_trace('X', [cos(30 * D2R), cos(45 * D2R)], DECBAS)
geo += __create_trace('Y', [sin(30 * D2R), sin(45 * D2R)], DECBAS)
geo += __create_trace('Z', [1, 1], DECBAS)
geo += __create_trace('F', [1, 1], DECBAS)
obs = StreamConverter.get_obs_from_geo(geo, True)
H = obs.select(channel='H')[0].data
E = obs.select(channel='E')[0].data
D = obs.select(channel='D')[0].data
assert_almost_equal(H, [cos(15 * D2R), cos(30 * D2R)], 9,
'Expect H to equal [cos(15), cos(30)]', True)
assert_almost_equal(E, [sin(15 * D2R), sin(30 * D2R)], 9,
'Expect E to equal [sin(15), sin(30)', True)
assert_almost_equal(D, [15 * D2R, 30 * D2R], 9,
'Expect D to equal [15 degress, 30 degrees]', True)
def test_get_obs_from_mag():
"""StreamConverter_test.test_get_obs_from_mag()
The magnetic stream containing the traces ''h'', ''d'', ''z'', and ''f''
converts to the observatory stream containing the traces
''h'', ''e'' and/or ''d'', ''z'', and ''f''
"""
mag = obspy.core.Stream()
# Call get_obs_from_mag using a decbas of 15, a H stream of [1,1],
# and a D stream of [30 degrees, 45 degrees]. Expect a H stream
# of [cos(15), cos(30)], a D stream of [30 degrees, 45 degrees],
# and a E stream of [sin(15), sin(30)]
DECBAS = 15 * D2I
mag += __create_trace('H', [1, 1], DECBAS)
mag += __create_trace('D', [30 * D2R, 45 * D2R], DECBAS)
mag += __create_trace('Z', [1, 1], DECBAS)
mag += __create_trace('F', [1, 1], DECBAS)
obs = StreamConverter.get_obs_from_mag(mag, True)
H = obs.select(channel='H')[0].data
D = obs.select(channel='D')[0].data
E = obs.select(channel='E')[0].data
assert_almost_equal(H, [cos(15 * D2R), cos(30 * D2R)], 9,
'Expect H to equal [cos(15), cos(30)', True)
assert_almost_equal(D, [15 * D2R, 30 * D2R], 9,
'Expect D to equal [15 degrees, 30 degrees', True)
assert_almost_equal(E, [sin(15 * D2R), sin(30 * D2R)], 9,
'Expect E to equal [sin(15), sin(30)', True)
def test_get_obs_from_geo():
"""StreamConverter_test.test_get_obs_from_geo()
The geographic stream containing the traces ''x'', ''y'', ''z'', and
''f'' converts to the observatory stream containing the traces
''h'', ''d'' or ''e'', ''z'', and ''f''.
"""
geo = obspy.core.Stream()
# Call get_geo_from_obs using a decbas of 15, a X stream of
# [cos(30), cos(45)], and a Y stream of [sin(30), sin(45)].
# Expect a H stream of [cos(15), cos(30)] and a
# E stream of [sin(15), sin(30)]
DECBAS = 15 * D2I
geo += __create_trace('X', [cos(30 * D2R), cos(45 * D2R)], DECBAS)
geo += __create_trace('Y', [sin(30 * D2R), sin(45 * D2R)], DECBAS)
geo += __create_trace('Z', [1, 1], DECBAS)
geo += __create_trace('F', [1, 1], DECBAS)
obs = StreamConverter.get_obs_from_geo(geo, True)
H = obs.select(channel='H')[0].data
E = obs.select(channel='E')[0].data
D = obs.select(channel='D')[0].data
assert_almost_equal(H, [cos(15 * D2R), cos(30 * D2R)], 9,
'Expect H to equal [cos(15), cos(30)]', True)
assert_almost_equal(E, [sin(15 * D2R), sin(30 * D2R)], 9,
'Expect E to equal [sin(15), sin(30)', True)
assert_almost_equal(D, [15 * D2R, 30 * D2R], 9,
'Expect D to equal [15 degress, 30 degrees]', True)
def test_get_geo_from_obs():
"""StreamConverter_test.test_get_geo_from_obs()
The observatory stream containing the observatory traces
''h'', ''d'' or ''e'', ''z'', and ''f'' converts to the geographic
stream containing the traces ''x'', ''y'', ''z'', and ''f''
"""
obs = obspy.core.Stream()
# 1) Call get_geo_from_obs using equal h, e streams with a decbas of 0
# the geographic stream values X, Y will be the same.
obs += __create_trace("H", [1])
obs += __create_trace("E", [1])
obs += __create_trace("Z", [1])
obs += __create_trace("F", [1])
geo = StreamConverter.get_geo_from_obs(obs)
X = geo.select(channel="X")[0].data
Y = geo.select(channel="Y")[0].data
assert_almost_equal(X[0], 1, 9, "Expect X to almost equal 1", True)
assert_almost_equal(Y[0], 1, 9, "Expect Y to almost equal 1", True)
# 2) Call get_geo_from_obs using a decbas of 15 degrees, and streams
# with H = [cos(15), cos(30)], and E = [sin(15), sin(30)].
# Expect streams of X = [cos(30), cos(45)] and Y = sin(30), sin(45)
obs = obspy.core.Stream()
DECBAS = 15 * D2I
obs += __create_trace("H", [cos(15 * D2R), cos(30 * D2R)], DECBAS)
obs += __create_trace("E", [sin(15 * D2R), sin(30 * D2R)], DECBAS)
obs += __create_trace("Z", [1, 1], DECBAS)
obs += __create_trace("F", [1, 1], DECBAS)
geo = StreamConverter.get_geo_from_obs(obs)
X = geo.select(channel="X")[0].data
Y = geo.select(channel="Y")[0].data
assert_almost_equal(
X,
[cos(30 * D2R), cos(45 * D2R)],
9,
"Expect X to equal [cos(30), cos(45)]",
True,
)
assert_almost_equal(
Y,
[sin(30 * D2R), sin(45 * D2R)],
9,
"Expect Y to equal [sin(30), sin(45)]",
True,
)
def test_get_geo_from_obs():
"""StreamConverter_test.test_get_geo_from_obs()
The observatory stream containing the observatory traces
''h'', ''d'' or ''e'', ''z'', and ''f'' converts to the geographic
stream containing the traces ''x'', ''y'', ''z'', and ''f''
"""
obs = obspy.core.Stream()
# 1) Call get_geo_from_obs using equal h, e streams with a decbas of 0
# the geographic stream values X, Y will be the same.
obs += __create_trace('H', [1])
obs += __create_trace('E', [1])
obs += __create_trace('Z', [1])
obs += __create_trace('F', [1])
geo = StreamConverter.get_geo_from_obs(obs)
X = geo.select(channel='X')[0].data
Y = geo.select(channel='Y')[0].data
assert_almost_equal(X[0], 1, 9,
'Expect X to almost equal 1', True)
assert_almost_equal(Y[0], 1, 9,
'Expect Y to almost equal 1', True)
# 2) Call get_geo_from_obs using a decbas of 15 degrees, and streams
# with H = [cos(15), cos(30)], and E = [sin(15), sin(30)].
# Expect streams of X = [cos(30), cos(45)] and Y = sin(30), sin(45)
obs = obspy.core.Stream()
DECBAS = 15 * D2I
obs += __create_trace('H', [cos(15 * D2R), cos(30 * D2R)], DECBAS)
obs += __create_trace('E', [sin(15 * D2R), sin(30 * D2R)], DECBAS)
obs += __create_trace('Z', [1, 1], DECBAS)
obs += __create_trace('F', [1, 1], DECBAS)
geo = StreamConverter.get_geo_from_obs(obs)
X = geo.select(channel='X')[0].data
Y = geo.select(channel='Y')[0].data
assert_almost_equal(X, [cos(30 * D2R), cos(45 * D2R)], 9,
'Expect X to equal [cos(30), cos(45)]', True)
assert_almost_equal(Y, [sin(30 * D2R), sin(45 * D2R)], 9,
'Expect Y to equal [sin(30), sin(45)]', True)
def test_get_mag_from_obs():
"""StreamConverter_test.test_get_mag_from_obs()
The observatory stream containing the traces ''h'', ''e'' or ''d'',
''z'' and ''f''
"""
obs = obspy.core.Stream()
# Call get_mag_from_obs using a DECBAS of 15 degrees, a H stream of
# [cos(15), cos(30)] and a E stream of [sin(15), sin(30)].
# Expect a H stream of [1, 1] and a D stream of [30 degrees, 45 degrees]
DECBAS = 15 * D2I
obs += __create_trace("H", [cos(15 * D2R), cos(30 * D2R)], DECBAS)
obs += __create_trace("E", [sin(15 * D2R), sin(30 * D2R)], DECBAS)
obs += __create_trace("Z", [1, 1], DECBAS)
obs += __create_trace("F", [1, 1], DECBAS)
mag = StreamConverter.get_mag_from_obs(obs)
H = mag.select(channel="H")[0].data
D = mag.select(channel="D")[0].data
assert_almost_equal(H, [1, 1], 9, "Expect H to equal [1,1]", True)
assert_almost_equal(D, [30 * D2R, 45 * D2R], 9,
"Expect D to equal [30 degrees, 45 degrees]", True)
def test_get_mag_from_geo():
"""StreamConverter_test.test_get_mag_from_geo()
The geographic stream containing the traces ''x'', ''y'', ''z'', and
''f'' converts to the magnetic stream containing the traces
''h'', ''d'', ''z'' and ''f''.
"""
geo = obspy.core.Stream()
# Call get_mag_from_geo using a decbas of 15, a X stream of
# [cos(15), cos(30)], and a Y stream of [sin(15), sin(30)].
# Expect a H stream of [1,1] and a D strem of [15 degrees, 30 degrees]
DECBAS = 15 * D2I
geo += __create_trace("X", [cos(15 * D2R), cos(30 * D2R)], DECBAS)
geo += __create_trace("Y", [sin(15 * D2R), sin(30 * D2R)], DECBAS)
geo += __create_trace("Z", [1, 1], DECBAS)
geo += __create_trace("F", [1, 1], DECBAS)
mag = StreamConverter.get_mag_from_geo(geo)
H = mag.select(channel="H")[0].data
D = mag.select(channel="D")[0].data
assert_almost_equal(H, [1, 1], 9, "Expect H to equal [1,1]", True)
assert_almost_equal(D, [15 * D2R, 30 * D2R], 9,
"Expect D to equal [15 degrees, 30 degrees]", True)
def test_get_mag_from_obs():
"""StreamConverter_test.test_get_mag_from_obs()
The observatory stream containing the traces ''h'', ''e'' or ''d'',
''z'' and ''f''
"""
obs = obspy.core.Stream()
# Call get_mag_from_obs using a DECBAS of 15 degrees, a H stream of
# [cos(15), cos(30)] and a E stream of [sin(15), sin(30)].
# Expect a H stream of [1, 1] and a D stream of [30 degrees, 45 degrees]
DECBAS = 15 * D2I
obs += __create_trace('H', [cos(15 * D2R), cos(30 * D2R)], DECBAS)
obs += __create_trace('E', [sin(15 * D2R), sin(30 * D2R)], DECBAS)
obs += __create_trace('Z', [1, 1], DECBAS)
obs += __create_trace('F', [1, 1], DECBAS)
mag = StreamConverter.get_mag_from_obs(obs)
H = mag.select(channel='H')[0].data
D = mag.select(channel='D')[0].data
assert_almost_equal(H, [1, 1], 9,
'Expect H to equal [1,1]', True)
assert_almost_equal(D, [30 * D2R, 45 * D2R], 9,
'Expect D to equal [30 degrees, 45 degrees]', True)
def test_get_mag_from_geo():
"""StreamConverter_test.test_get_mag_from_geo()
The geographic stream containing the traces ''x'', ''y'', ''z'', and
''f'' converts to the magnetic stream containing the traces
''h'', ''d'', ''z'' and ''f''.
"""
geo = obspy.core.Stream()
# Call get_mag_from_geo using a decbas of 15, a X stream of
# [cos(15), cos(30)], and a Y stream of [sin(15), sin(30)].
# Expect a H stream of [1,1] and a D strem of [15 degrees, 30 degrees]
DECBAS = 15 * D2I
geo += __create_trace('X', [cos(15 * D2R), cos(30 * D2R)], DECBAS)
geo += __create_trace('Y', [sin(15 * D2R), sin(30 * D2R)], DECBAS)
geo += __create_trace('Z', [1, 1], DECBAS)
geo += __create_trace('F', [1, 1], DECBAS)
mag = StreamConverter.get_mag_from_geo(geo)
H = mag.select(channel='H')[0].data
D = mag.select(channel='D')[0].data
assert_almost_equal(H, [1, 1], 9,
'Expect H to equal [1,1]', True)
assert_almost_equal(D, [15 * D2R, 30 * D2R], 9,
'Expect D to equal [15 degrees, 30 degrees]', True)
def test_get_geo_from_mag():
"""StreamConverter_test.test_get_geo_from_mag()
The magnetic north stream containing the traces ''h'', ''d'', ''z'', and
''f'' converts to the geographics stream containing the traces ''x'',
''y'', ''z'' and ''f''
"""
mag = obspy.core.Stream()
# Call get_geo_from_magusing a decbas of 15 degrees, and streams with
# H = [1, 1], and D = [15 degrees, 30 degrees], expect streams of
# X = [cos(15), cos(30)] and Y = [sin(15), sin(30)]
# stats.DECBAS = 15 * D2I
mag += __create_trace('H', [1, 1])
mag += __create_trace('D', [15 * D2R, 30 * D2R])
mag += __create_trace('Z', [1, 1])
mag += __create_trace('F', [1, 1])
geo = StreamConverter.get_geo_from_mag(mag)
X = geo.select(channel='X')[0].data
Y = geo.select(channel='Y')[0].data
assert_almost_equal(X, [cos(15 * D2R), cos(30 * D2R)], 9,
'Expect X to equal [cos(15), cos(30)]', True)
assert_almost_equal(Y, [sin(15 * D2R), sin(30 * D2R)], 9,
'Expect Y to equal [sin(15), sin(30)]', True)