def call(self):
fn = self.input_filename()
with open(fn) as f:
read_data = f.readlines()
allaz = {}
for i, line in enumerate(read_data):
fields = string.split(line)
k = string.lower(fields[0])
if not k == '#':
allaz[k] = float(fields[1])
p = self.get_pile()
key = lambda tr: (tr.network, tr.station)
tmin, tmax = self.get_selected_time_range(fallback=True)
for traces in p.chopper_grouped(tmin=tmin, tmax=tmax, gather=key):
if not traces:
continue
# rotate all stations except d05
if self.d05_included(traces):
continue
if self.want_pre_rotate(traces):
az = -1 * allaz[traces[0].station]
rotated = trace.rotate(traces, az, ('E', 'N'), ('EX', 'NY'))
print 'using pre-rotated traces\n%s %s ' % tuple(rotated)
rot_from = ('NY', 'EX')
rot_to = ('NN', 'EN')
else:
rotated = [
tr.copy() for tr in traces if tr.channel[-1] in '34'
]
for tr in rotated:
tr.set_channel(tr.channel.upper())
print 'using UN-pre-rotated traces\n%s %s ' % tuple(rotated)
rot_from = ('HH4', 'HH3')
rot_to = ('N', 'E')
az = allaz[traces[0].station]
n_new, e_new = trace.rotate(rotated, az, rot_from, rot_to)
n_new.set_codes(station=traces[0].station)
e_new.set_codes(station=traces[0].station)
self.add_traces([n_new, e_new])
def RotateAllTraces(degrange, Traces):
'''
:param degrange: list of degree values to rotate
:param Traces: list of Traces to rotate
:return: dict containing degrees as keys and
rotatedTraces
'''
rotTrac={}
for deg in degrange:
rotatedTraces = trace.rotate(Traces, deg, ['n', 'e'], ['p1rot', 'p2rot'])
rotTrac[deg] = rotatedTraces
return rotTrac
def testRotation(self):
s2 = math.sqrt(2.)
ndata = num.array([s2, s2], dtype=num.float)
edata = num.array([s2, 0.], dtype=num.float)
dt = 1.0
n = trace.Trace(deltat=dt, ydata=ndata, tmin=100, channel='N')
e = trace.Trace(deltat=dt, ydata=edata, tmin=100, channel='E')
rotated = trace.rotate([n, e], 45., ['N', 'E'], ['R', 'T'])
for tr in rotated:
if tr.channel == 'R':
r = tr
if tr.channel == 'T':
t = tr
assert numeq(r.get_ydata(), [2., 1.], 1.0e-6)
assert numeq(t.get_ydata(), [0., -1], 1.0e-6)
def testRotation(self):
s2 = math.sqrt(2.)
ndata = num.array([s2,s2], dtype=num.float)
edata = num.array([s2,0.], dtype=num.float)
dt = 1.0
n = trace.Trace(deltat=dt, ydata=ndata, tmin=100, channel='N')
e = trace.Trace(deltat=dt, ydata=edata, tmin=100, channel='E')
rotated = trace.rotate([n,e], 45., ['N','E'], ['R','T'])
for tr in rotated:
if tr.channel == 'R':
r = tr
if tr.channel == 'T':
t = tr
assert numeq(r.get_ydata(), [2.,1.], 1.0e-6)
assert numeq(t.get_ydata(), [ 0., -1 ], 1.0e-6)
if displacements:
if projections:
for project in projections:
matrix, in_channels, out_channels = project(out_station)
projected = trace.project(displacements, matrix, in_channels, out_channels)
displacements.extend(projected)
for tr in projected:
for ch in out_channels:
if ch.name == tr.channel:
out_station.add_channel(ch)
if rotations:
for rotate in rotations:
angle, in_channels, out_channels = rotate(out_station)
rotated = trace.rotate(displacements, angle, in_channels, out_channels)
displacements.extend(rotated)
for tr in rotated:
for ch in out_channels:
if ch.name == tr.channel:
out_station.add_channel(ch)
yield displacements
def get_restitution(self, tr, allowed_methods):
if 'integration' in allowed_methods:
trace.IntegrationResponse()
else:
raise Exception('only "integration" restitution method is allowed')
def prep_orient(datapath,
st,
loc,
catalog,
dir_ro,
v_rayleigh,
bp,
dt_start,
dt_stop,
ccmin=0.80,
plot_heatmap=False,
plot_distr=False,
debug=False):
"""
Perform orientation analysis using Rayleigh waves, main function.
time wdw: 20s before 4.0km/s arrival and 600 s afterwards
(Stachnik et al. 2012)
- compute radial component for back values of 0 to 360 deg
- for each c-c of hilbert(R) with Z comp.
- call plotting functions and/or write results to file
:param datapath: path to rrd data
:param st: current station (pyrocko station object)
:param catalog: list of pyrocko events used for analysis
:param dir_ro: output directory
:param plot_heatmap: bool, optional
:param plot_distr: bool, optional
"""
logs = logging.getLogger('prep_orient')
st_data_pile = pile.make_pile(datapath,
regex='%s_%s_' % (st.network, st.station),
show_progress=False)
n_ev = len(catalog)
if st_data_pile.tmin is not None and st_data_pile.tmax is not None:
# calculate dist between all events and current station
r_arr_by_ev = num.empty(n_ev)
ev_lats = num.asarray([ev.lat for ev in catalog])
ev_lons = num.asarray([ev.lon for ev in catalog])
dists = distance_accurate50m_numpy(a_lats=ev_lats,
a_lons=ev_lons,
b_lats=st.lat,
b_lons=st.lon,
implementation='c')
r_arr_by_ev = (dists / 1000.) / v_rayleigh
cc_i_ev_vs_rota = num.empty((n_ev, 360))
rot_angles = range(-180, 180, 1)
for i_ev, ev in enumerate(catalog):
arrT = ev.time + r_arr_by_ev[i_ev]
start_twd1 = ev.time
end_twd1 = arrT + 1800
trZ = get_tr_by_cha(st_data_pile, start_twd1, end_twd1, loc, 'Z')
trR = get_tr_by_cha(st_data_pile, start_twd1, end_twd1, loc, 'R')
trT = get_tr_by_cha(st_data_pile, start_twd1, end_twd1, loc, 'T')
start_twd2 = ev.time + r_arr_by_ev[i_ev] - dt_start
end_twd2 = arrT + dt_stop
if len(trZ) == 1 and len(trR) == 1 and len(trT) == 1:
trZ = trZ[0]
trR = trR[0]
trT = trT[0]
# debugging - window selection:
if debug is True:
trace.snuffle([trZ, trR, trT],
markers=[
pm.Marker(nslc_ids=[
trZ.nslc_id, trR.nslc_id, trT.nslc_id
],
tmin=start_twd2,
tmax=end_twd2),
pm.Marker(nslc_ids=[
trZ.nslc_id, trR.nslc_id, trT.nslc_id
],
tmin=arrT,
tmax=arrT + 3)
])
else:
cc_i_ev_vs_rota[i_ev, :] = num.nan
continue
try:
trZ.bandpass(bp[0], bp[1], bp[2])
trZ.chop(tmin=start_twd2, tmax=end_twd2)
except trace.NoData:
logs.warning('no data %s %s %s' % (trZ, trR, trT))
continue
for i_r, r in enumerate(rot_angles):
print('rotation angle [deg]: %5d' % r, end='\r')
rot_2, rot_3 = trace.rotate(traces=[trR, trT],
azimuth=r,
in_channels=['R', 'T'],
out_channels=['2', '3'])
rot_2_y = rot_2.ydata
rot_2_hilb = num.imag(trace.hilbert(rot_2_y, len(rot_2_y)))
rot_2_hilb_tr = trace.Trace(deltat=rot_2.deltat,
ydata=rot_2_hilb,
tmin=rot_2.tmin)
# problem: rot_2 and rot_2_hilb look exactly the same!
# --> no phase shift. why? should be num.imag!!!
# trace.snuffle([rot_2, rot_2_hilb_tr])
rot_2_hilb_tr.bandpass(bp[0], bp[1], bp[2])
rot_2_hilb_tr.chop(tmin=start_twd2, tmax=end_twd2)
# if st.station == 'RORO' and r == 0:
# trace.snuffle([rot_2_hilb_tr, trZ])
# normalize traces
trZ.ydata /= abs(max(trZ.ydata))
rot_2_hilb_tr.ydata /= abs(max(rot_2_hilb_tr.ydata))
c = trace.correlate(trZ,
rot_2_hilb_tr,
mode='valid',
normalization='normal')
t, coef = c.max()
t2, coef2 = max_or_min(c)
'''
if st.station == 'MATE' and r == 0:
print(i_ev, ev.name, ev.depth)
print(r, t, coef, t2, coef2)
trace.snuffle([trZ, trR, rot_2_hilb_tr])
'''
cc_i_ev_vs_rota[i_ev, i_r] = coef
'''
if st.station == 'MATE':
for i_ev in range(n_ev):
print(num.argmax(cc_i_ev_vs_rota[i_ev,:]),
num.max(cc_i_ev_vs_rota[i_ev,:]))
'''
if plot_heatmap is True:
fig, ax = plt.subplots(nrows=1, ncols=1, figsize=(8, 2))
cax = ax.imshow(cc_i_ev_vs_rota,
interpolation='nearest',
vmin=-1.0,
vmax=1.0,
aspect='auto',
extent=[-180, 180, n_ev, 0],
cmap='binary')
ax.set_ylabel('i_ev')
ax.set_xlabel('Correction angle (deg)')
ax.set_title('%s %s' % (st.network, st.station))
cbar = fig.colorbar(cax,
ticks=[0, 0.5, 1.0],
orientation='horizontal',
fraction=0.05,
pad=0.5)
cbar.ax.set_xticklabels(['0', '0.5', '1.0'])
plt.tight_layout()
# plt.show(fig)
fig.savefig(
os.path.join(
dir_ro, '%s_%s_%s_rot_cc_heatmap.png' %
(st.network, st.station, loc)))
plt.close()
if plot_distr is True:
plot_ccdistr_each_event(cc_i_ev_vs_rota, catalog, rot_angles, st,
loc, dir_ro)
median_a, mean_a, std_a, switched, n_ev =\
get_m_angle_switched(cc_i_ev_vs_rota, catalog, st, ccmin)
dict_ev_angle = get_m_angle_all(cc_i_ev_vs_rota, catalog, st, ccmin)
return median_a, mean_a, std_a, switched, dict_ev_angle, n_ev
