def process(self, timeseries):
"""converts a timeseries stream into a different coordinate system
Parameters
----------
informat: string
indicates the input coordinate system.
outformat: string
indicates the output coordinate system.
out_stream: obspy.core.Stream
new stream object containing the converted coordinates.
"""
self.check_stream(timeseries)
out_stream = None
if self.outformat == 'geo':
if self.informat == 'geo':
out_stream = timeseries
elif self.informat == 'mag':
out_stream = StreamConverter.get_geo_from_mag(timeseries)
elif self.informat == 'obs' or self.informat == 'obsd':
out_stream = StreamConverter.get_geo_from_obs(timeseries)
elif self.outformat == 'mag':
if self.informat == 'geo':
out_stream = StreamConverter.get_mag_from_geo(timeseries)
elif self.informat == 'mag':
out_stream = timeseries
elif self.informat == 'obs' or self.informat == 'obsd':
out_stream = StreamConverter.get_mag_from_obs(timeseries)
elif self.outformat == 'obs':
if self.informat == 'geo':
out_stream = StreamConverter.get_obs_from_geo(timeseries)
elif self.informat == 'mag':
out_stream = StreamConverter.get_obs_from_mag(timeseries)
elif self.informat == 'obs' or self.informat == 'obsd':
out_stream = StreamConverter.get_obs_from_obs(timeseries,
include_e=True)
elif self.outformat == 'obsd':
if self.informat == 'geo':
out_stream = StreamConverter.get_obs_from_geo(timeseries,
include_d=True)
elif self.informat == 'mag':
out_stream = StreamConverter.get_obs_from_mag(timeseries,
include_d=True)
elif self.informat == 'obs' or self.informat == 'obsd':
out_stream = StreamConverter.get_obs_from_obs(timeseries,
include_d=True)
return out_stream
def test_get_mag_from_geo():
"""geomag.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_geo():
"""geomag.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)
