def rotateToGCP(self):
tr=self.copy()
#begin loop over data stream
for i in range(len(tr)-1):
# split channel
li0 = list(tr[i+0].stats['channel'])
li1 = list(tr[i+1].stats['channel'])
# chech if station and part 1 of channel is identical and location
if li0[0] == li1[0] and li0[1] == li1[1] \
and tr[i+0].stats['station'] == tr[i+1].stats['station']\
and tr[i+0].stats['location'] == tr[i+1].stats['location']:
rch = li0[0] + li0[1] + 'R'
tch = li0[0] + li0[1] + 'T'
# if yes 3 possibility: EN, NE , pass
if li0[2]=="E" and li1[2]=="N":
#baz
baz = tr[i].stats['baz']
if tr[i+0].stats['npts'] == tr[i+1].stats['npts']:
# rotate 0-1
(tr[i+1].data,tr[i+0].data) = rotate_NE_RT(tr[i+1].data,tr[i+0].data,baz)
tr[i+0].stats['channel']=tch
tr[i+1].stats['channel']=rch
i=i+1
else:
print "Can't rotate ",tr[i+0].stats['station'],tr[i+0].stats['channel'], " and ", \
tr[i+1].stats['station'],tr[i+1].stats['channel']
elif li0[2]=="N" and li1[2]=="E":
#baz
baz = tr[i].stats['baz']
if tr[i+0].stats['npts'] == tr[i+1].stats['npts']:
# # rotate 1-0
(tr[i+0].data,tr[i+1].data) = rotate_NE_RT(tr[i+0].data,tr[i+1].baz)
tr[i+1].stats['channel']=tch
tr[i+0].stats['channel']=rch
i=i+1
else:
print "Can't rotate ",tr[i+0].stats['station'],tr[i+0].stats['channel'], " and ", \
tr[i+1].stats['station'],tr[i+1].stats['channel']
else:
pass
return tr
def test_rotate_NE_RTVsPitsa(self):
"""
Test horizontal component rotation against PITSA.
"""
# load test files
# no with due to py 2.6
f = gzip.open(os.path.join(self.path, 'rjob_20051006_n.gz'))
data_n = np.loadtxt(f)
f.close()
f = gzip.open(os.path.join(self.path, 'rjob_20051006_e.gz'))
data_e = np.loadtxt(f)
f.close()
#test different angles, one from each sector
for angle in [30, 115, 185, 305]:
# rotate traces
datcorr_r, datcorr_t = rotate_NE_RT(data_n, data_e, angle)
# load pitsa files
f = gzip.open(os.path.join(self.path,
'rjob_20051006_r_%sdeg.gz' %
angle))
data_pitsa_r = np.loadtxt(f)
f.close()
f = gzip.open(os.path.join(self.path,
'rjob_20051006_t_%sdeg.gz' %
angle))
data_pitsa_t = np.loadtxt(f)
f.close()
# Assert.
self.assertTrue(np.allclose(datcorr_r, data_pitsa_r, rtol=1E-3,
atol=1E-5))
self.assertTrue(np.allclose(datcorr_t, data_pitsa_t, rtol=1E-3,
atol=1E-5))
def test_rotate_NE_RTVsPitsa(self):
"""
Test horizontal component rotation against PITSA.
"""
# load test files
# no with due to py 2.6
f = gzip.open(os.path.join(self.path, 'rjob_20051006_n.gz'))
data_n = np.loadtxt(f)
f.close()
f = gzip.open(os.path.join(self.path, 'rjob_20051006_e.gz'))
data_e = np.loadtxt(f)
f.close()
# test different angles, one from each sector
for angle in [30, 115, 185, 305]:
# rotate traces
datcorr_r, datcorr_t = rotate_NE_RT(data_n, data_e, angle)
# load pitsa files
f = gzip.open(
os.path.join(self.path, 'rjob_20051006_r_%sdeg.gz' % angle))
data_pitsa_r = np.loadtxt(f)
f.close()
f = gzip.open(
os.path.join(self.path, 'rjob_20051006_t_%sdeg.gz' % angle))
data_pitsa_t = np.loadtxt(f)
f.close()
# Assert.
self.assertTrue(
np.allclose(datcorr_r, data_pitsa_r, rtol=1E-3, atol=1E-5))
self.assertTrue(
np.allclose(datcorr_t, data_pitsa_t, rtol=1E-3, atol=1E-5))
def test_rotate_NE_RT_NE(self):
"""
Rotating there and back with the same back-azimuth should not change
the data.
"""
# load the data
data_n = np.loadtxt(os.path.join(self.path, 'rjob_20051006_n.gz'))
data_e = np.loadtxt(os.path.join(self.path, 'rjob_20051006_e.gz'))
# Use double precision to get more accuracy for testing.
data_n = np.require(data_n, "float64")
data_e = np.require(data_e, "float64")
ba = 33.3
new_n, new_e = rotate_NE_RT(data_n, data_e, ba)
new_n, new_e = rotate_RT_NE(new_n, new_e, ba)
self.assertTrue(np.allclose(data_n, new_n, rtol=1E-7, atol=1E-12))
self.assertTrue(np.allclose(data_e, new_e, rtol=1E-7, atol=1E-12))
def test_rotate_NE_RT_NE(self):
"""
Rotating there and back with the same back-azimuth should not change
the data.
"""
# load the data
data_n = np.loadtxt(os.path.join(self.path, 'rjob_20051006_n.gz'))
data_e = np.loadtxt(os.path.join(self.path, 'rjob_20051006_e.gz'))
# Use double precision to get more accuracy for testing.
data_n = np.require(data_n, "float64")
data_e = np.require(data_e, "float64")
ba = 33.3
new_n, new_e = rotate_NE_RT(data_n, data_e, ba)
new_n, new_e = rotate_RT_NE(new_n, new_e, ba)
self.assertTrue(np.allclose(data_n, new_n, rtol=1E-7, atol=1E-12))
self.assertTrue(np.allclose(data_e, new_e, rtol=1E-7, atol=1E-12))
def test_rotate_NE_RTVsPitsa(self):
"""
Test horizontal component rotation against PITSA.
"""
# load test files
file = os.path.join(self.path, 'rjob_20051006_n.gz')
f = gzip.open(file)
data_n = np.loadtxt(f)
f.close()
file = os.path.join(self.path, 'rjob_20051006_e.gz')
f = gzip.open(file)
data_e = np.loadtxt(f)
f.close()
#test different angles, one from each sector
for angle in [30, 115, 185, 305]:
# rotate traces
datcorr_r, datcorr_t = rotate_NE_RT(data_n, data_e, angle)
# load pitsa files
file = os.path.join(self.path, 'rjob_20051006_r_%sdeg.gz' % angle)
f = gzip.open(file)
data_pitsa_r = np.loadtxt(f)
f.close()
file = os.path.join(self.path, 'rjob_20051006_t_%sdeg.gz' % angle)
f = gzip.open(file)
data_pitsa_t = np.loadtxt(f)
f.close()
# calculate normalized rms
rms = np.sqrt(np.sum((datcorr_r - data_pitsa_r) ** 2) /
np.sum(data_pitsa_r ** 2))
rms += np.sqrt(np.sum((datcorr_t - data_pitsa_t) ** 2) /
np.sum(data_pitsa_t ** 2))
rms /= 2.0
#from pylab import figure,plot,legend,show
#figure()
#plot(datcorr_r,label="R ObsPy")
#plot(data_pitsa_r,label="R PITSA")
#plot(datcorr_t,label="T ObsPy")
#plot(data_pitsa_t,label="T PITSA")
#legend()
#show()
self.assertEqual(rms < 1.0e-5, True)