def main(input_file, output_file, network, reverb_stations=None):
"""
Apply dereverberation to the R-component of receiver function.
This is not a fully fledged sediment compensation method, and
convention stacking applied after this may not reflect true depths
to signal features.
:param input_file: RF file to load in obspyh5 format with rf indexing
:param output_file: RF file to write in obspyh5 format with rf indexing
:param network: Network code of data to load from input file
:param reverb_stations: File of station codes (one per line) to filter.
"""
if reverb_stations is None:
reverb_stations = []
else:
reverb_stations = reverb_stations.read().splitlines()
# end if
rf_stream = rf_util.read_h5_rf(input_file)
rf_stream = rf_stream.select(network=network, component='R')
stations = tqdm(reverb_stations, total=len(reverb_stations))
for sta in stations:
stations.set_description(sta)
sta_stream = rf_stream.select(station=sta)
if not sta_stream:
continue
_dereverb_yu_autocorr(sta_stream)
# end if
rf_stream.write(output_file, format='h5')
def main(input_file,
output_file,
event_mask_folder='',
apply_amplitude_filter=False,
apply_similarity_filter=False,
hk_weights=DEFAULT_HK_WEIGHTS):
# Read source file
data_all = rf_util.read_h5_rf(input_file)
# Convert to hierarchical dictionary format
data_dict = rf_util.rf_to_dict(data_all)
event_mask_dict = None
if event_mask_folder and os.path.isdir(event_mask_folder):
mask_files = os.listdir(event_mask_folder)
mask_files = [
f for f in mask_files
if os.path.isfile(os.path.join(event_mask_folder, f))
]
# print(mask_files)
pattern = r"([A-Za-z0-9\.]{5,})_event_mask\.txt"
pattern = re.compile(pattern)
event_mask_dict = dict()
for f in mask_files:
match_result = pattern.match(f)
if not match_result:
continue
code = match_result[1]
# print(code)
with open(os.path.join(event_mask_folder, f), 'r') as f:
events = f.readlines()
events = set([e.strip() for e in events])
event_mask_dict[code] = events
# end with
# end for
# end if
if event_mask_dict:
print("Loaded {} event masks".format(len(event_mask_dict)))
# end if
# Plot all data to PDF file
fixed_stack_height_inches = 0.8
y_pad_inches = 1.6
total_trace_height_inches = paper_size_A4[
1] - fixed_stack_height_inches - y_pad_inches
max_trace_height = 0.2
with PdfPages(output_file) as pdf:
# Would like to use Tex, but lack desktop PC privileges to update packages to what is required
plt.rc('text', usetex=False)
pbar = tqdm.tqdm(total=len(data_dict))
network = data_dict.network
rf_type = data_dict.rotation
for st in sorted(data_dict.keys()):
station_db = data_dict[st]
pbar.update()
pbar.set_description("{}.{}".format(network, st))
# Choose RF channel
channel = rf_util.choose_rf_source_channel(rf_type, station_db)
channel_data = station_db[channel]
full_code = '.'.join([network, st, channel])
t_channel = list(channel)
t_channel[-1] = 'T'
t_channel = ''.join(t_channel)
rf_stream = rf.RFStream(channel_data).sort(['back_azimuth'])
if event_mask_dict and full_code in event_mask_dict:
# Select events from external source
event_mask = event_mask_dict[full_code]
rf_stream = rf.RFStream([
tr for tr in rf_stream if tr.stats.event_id in event_mask
]).sort(['back_azimuth'])
# end if
if apply_amplitude_filter:
# Label and filter quality
rf_util.label_rf_quality_simple_amplitude(rf_type, rf_stream)
rf_stream = rf.RFStream([
tr for tr in rf_stream if tr.stats.predicted_quality == 'a'
]).sort(['back_azimuth'])
# end if
if apply_similarity_filter:
rf_stream = rf_util.filter_crosscorr_coeff(rf_stream)
# end if
if not rf_stream:
continue
# Find matching T-component data
events = [tr.stats.event_id for tr in rf_stream]
transverse_data = station_db[t_channel]
t_stream = rf.RFStream([
tr for tr in transverse_data if tr.stats.event_id in events
]).sort(['back_azimuth'])
if not t_stream:
continue
# Plot pinwheel of primary and transverse components
fig = rf_plot_utils.plot_rf_wheel([rf_stream, t_stream],
fontscaling=0.8)
fig.set_size_inches(*paper_size_A4)
plt.tight_layout()
plt.subplots_adjust(hspace=0.15, top=0.95, bottom=0.15)
ax = fig.gca()
fig.text(-0.32,
-0.32,
"\n".join(rf_stream[0].stats.processing),
fontsize=6,
transform=ax.transAxes)
pdf.savefig(dpi=300, papertype='a4', orientation='portrait')
plt.close()
num_traces = len(rf_stream)
assert len(t_stream) == num_traces
# Plot RF stack of primary component
trace_ht = min(total_trace_height_inches / num_traces,
max_trace_height)
fig = rf_plot_utils.plot_rf_stack(
rf_stream,
trace_height=trace_ht,
stack_height=fixed_stack_height_inches,
fig_width=paper_size_A4[0])
fig.suptitle("Channel {}".format(rf_stream[0].stats.channel))
# Customize layout to pack to top of page while preserving RF plots aspect ratios
_rf_layout_A4(fig)
# Save to new page in file
pdf.savefig(dpi=300, papertype='a4', orientation='portrait')
plt.close()
# Plot RF stack of transverse component
fig = rf_plot_utils.plot_rf_stack(
t_stream,
trace_height=trace_ht,
stack_height=fixed_stack_height_inches,
fig_width=paper_size_A4[0])
fig.suptitle("Channel {}".format(t_stream[0].stats.channel))
# Customize layout to pack to top of page while preserving RF plots aspect ratios
_rf_layout_A4(fig)
# Save to new page in file
pdf.savefig(dpi=300, papertype='a4', orientation='portrait')
plt.close()
# Plot H-k stack using primary RF component
fig = _produce_hk_stacking(rf_stream, weighting=hk_weights)
paper_landscape = (paper_size_A4[1], paper_size_A4[0])
fig.set_size_inches(*paper_landscape)
# plt.tight_layout()
# plt.subplots_adjust(hspace=0.15, top=0.95, bottom=0.15)
pdf.savefig(dpi=300, papertype='a4', orientation='landscape')
plt.close()
# end for
pbar.close()
def rf_inversion_export(input_h5_file,
output_folder,
network_code,
component='R',
resample_freq=6.25,
trim_window=(-5.0, 20.0),
moveout=True):
"""Export receiver function to text format for ingestion into Fortran RF inversion code.
:param input_h5_file: Input hdf5 file containing receiver function data
:type input_h5_file: str or Path
:param output_folder: Folder in which to export text files, one per channel per station.
Will be appended with network code.
:type output_folder: str or Path
:param network_code: Network to which this RF data belongs, used to disambiguate and track folders.
:type network_code: str
:param component: The channel component to export, defaults to 'R'
:type component: str, optional
:param resample_freq: Sampling rate (Hz) of the output files, defaults to 6.25 Hz
:type resample_freq: float, optional
:param trim_window: Time window to export relative to onset, defaults to (-5.0, 20.0). If data needs
to be resampled, the samples are anchored to the start of this time window.
:type trim_window: tuple, optional
:param moveout: Whether to apply moveout correction prior to exporting, defaults to True
:type moveout: bool, optional
"""
# Process for each station:
# 1. Load hdf5 file containing RFs
# 2. Filter to desired component.
# 3. Quality filter to those that meet criteria (Sippl cross-correlation similarity)
# 4. Moveout and stack the RFs
# 5. Resample (lanczos) and trim RF
# 6. Export one file per station in (time, amplitude format)
output_folder += "_" + network_code
if not os.path.isdir(output_folder):
os.makedirs(output_folder, exist_ok=True)
# end if
data = rf_util.read_h5_rf(input_h5_file)
data = data.select(component=component)
rf_util.label_rf_quality_simple_amplitude('ZRT',
data,
snr_cutoff=2.0,
rms_amp_cutoff=0.2,
max_amp_cutoff=2.0)
data = rf.RFStream(
[tr for tr in data if tr.stats.predicted_quality == 'a'])
data_dict = rf_util.rf_to_dict(data)
for sta, ch_dict in data_dict:
for cha, ch_traces in ch_dict.items():
similar_traces = rf_util.filter_crosscorr_coeff(
rf.RFStream(ch_traces))
if not similar_traces:
continue
if moveout:
similar_traces.moveout()
# end if
stack = similar_traces.stack()
trace = stack[0]
exact_start_time = trace.stats.onset + trim_window[0]
stack.interpolate(sampling_rate=resample_freq,
method='lanczos',
a=10,
starttime=exact_start_time)
stack.trim2(*trim_window, reftime='onset')
times = trace.times() - (trace.stats.onset - trace.stats.starttime)
# TODO: Remove hardwired scaling factor.
# This scaling factor only applies to iterative deconvolution with default Gaussian width
# factor of 2.5. Once we upgrade to rf library version >= 0.9.0, we can remove this hardwired
# setting and instead have it determined programatically from rf processing metadata stored
# in the trace stats structure.
# The scaling factor originates in the amplitude attenuation effect of the filtering applied
# in iterative deconv, see table at end of this page:
# http://eqseis.geosc.psu.edu/~cammon/HTML/RftnDocs/seq01.html
# The values in this reference table are derived as the integral of the area under the
# Gaussian in the frequency domain. Analytically, this amounts to simply dividing by scaling
# factor of a/sqrt(pi), where 'a' here is the Gaussian width used in iterative deconvolution.
iterdeconv_scaling = 2.5 / np.sqrt(np.pi)
column_data = np.array([times, trace.data / iterdeconv_scaling]).T
fname = os.path.join(
output_folder, "_".join([network_code, sta, cha]) + "_rf.dat")
np.savetxt(fname, column_data, fmt=('%5.2f', '%.8f'))
def main(input_file,
output_file,
event_mask_folder='',
apply_amplitude_filter=False,
apply_similarity_filter=False,
hk_weights=DEFAULT_HK_WEIGHTS,
hk_solution_labels=DEFAULT_HK_SOLN_LABEL,
hk_hpf_freq=None,
hk_vp=DEFAULT_Vp,
save_hk_solution=False):
# docstring redundant since CLI options are already documented.
log.setLevel(logging.INFO)
# Read source file
log.info("Loading input file {}".format(input_file))
data_all = rf_util.read_h5_rf(input_file)
# Convert to hierarchical dictionary format
data_dict = rf_util.rf_to_dict(data_all)
event_mask_dict = None
if event_mask_folder and os.path.isdir(event_mask_folder):
log.info(
"Applying event mask from folder {}".format(event_mask_folder))
mask_files = os.listdir(event_mask_folder)
mask_files = [
f for f in mask_files
if os.path.isfile(os.path.join(event_mask_folder, f))
]
pattern = r"([A-Za-z0-9\.]{5,})_event_mask\.txt"
pattern = re.compile(pattern)
event_mask_dict = dict()
for f in mask_files:
match_result = pattern.match(f)
if not match_result:
continue
code = match_result[1]
with open(os.path.join(event_mask_folder, f), 'r') as _f:
events = _f.readlines()
events = set([e.strip() for e in events])
event_mask_dict[code] = events
# end with
# end for
# end if
if event_mask_dict:
log.info("Loaded {} event masks".format(len(event_mask_dict)))
# end if
# Plot all data to PDF file
fixed_stack_height_inches = 0.8
y_pad_inches = 1.6
total_trace_height_inches = paper_size_A4[
1] - fixed_stack_height_inches - y_pad_inches
max_trace_height = 0.2
log.setLevel(logging.WARNING)
with PdfPages(output_file) as pdf:
# Would like to use Tex, but lack desktop PC privileges to update packages to what is required
plt.rc('text', usetex=False)
pbar = tqdm.tqdm(total=len(data_dict))
network = data_dict.network
rf_type = data_dict.rotation
hk_soln = dict()
station_coords = dict()
for st in sorted(data_dict.keys()):
station_db = data_dict[st]
pbar.update()
pbar.set_description("{}.{}".format(network, st))
# Choose RF channel
channel = rf_util.choose_rf_source_channel(rf_type, station_db)
channel_data = station_db[channel]
if not channel_data:
continue
# end if
full_code = '.'.join([network, st, channel])
t_channel = list(channel)
t_channel[-1] = 'T'
t_channel = ''.join(t_channel)
rf_stream = rf.RFStream(channel_data).sort(['back_azimuth'])
if event_mask_dict and full_code in event_mask_dict:
# Select events from external source
event_mask = event_mask_dict[full_code]
rf_stream = rf.RFStream([
tr for tr in rf_stream if tr.stats.event_id in event_mask
]).sort(['back_azimuth'])
# end if
if apply_amplitude_filter:
# Label and filter quality
rf_util.label_rf_quality_simple_amplitude(rf_type, rf_stream)
rf_stream = rf.RFStream([
tr for tr in rf_stream if tr.stats.predicted_quality == 'a'
]).sort(['back_azimuth'])
# end if
if not rf_stream:
continue
if apply_similarity_filter and len(rf_stream) >= 3:
rf_stream = rf_util.filter_crosscorr_coeff(rf_stream)
# end if
if not rf_stream:
continue
# Find matching T-component data
events = [tr.stats.event_id for tr in rf_stream]
transverse_data = station_db[t_channel]
t_stream = rf.RFStream([
tr for tr in transverse_data if tr.stats.event_id in events
]).sort(['back_azimuth'])
# Plot pinwheel of primary and transverse components
fig = rf_plot_utils.plot_rf_wheel([rf_stream, t_stream],
fontscaling=0.8)
fig.set_size_inches(*paper_size_A4)
plt.tight_layout()
plt.subplots_adjust(hspace=0.15, top=0.95, bottom=0.15)
ax = fig.gca()
fig.text(-0.32,
-0.32,
"\n".join(rf_stream[0].stats.processing),
fontsize=6,
transform=ax.transAxes)
pdf.savefig(dpi=300, papertype='a4', orientation='portrait')
plt.close()
num_traces = len(rf_stream)
assert len(t_stream) == num_traces or not t_stream
# Plot RF stack of primary component
trace_ht = min(total_trace_height_inches / num_traces,
max_trace_height)
fig = rf_plot_utils.plot_rf_stack(
rf_stream,
trace_height=trace_ht,
stack_height=fixed_stack_height_inches,
fig_width=paper_size_A4[0])
fig.suptitle("Channel {}".format(rf_stream[0].stats.channel))
# Customize layout to pack to top of page while preserving RF plots aspect ratios
_rf_layout_A4(fig)
# Save to new page in file
pdf.savefig(dpi=300, papertype='a4', orientation='portrait')
plt.close()
# Plot RF stack of transverse component
if t_stream:
fig = rf_plot_utils.plot_rf_stack(
t_stream,
trace_height=trace_ht,
stack_height=fixed_stack_height_inches,
fig_width=paper_size_A4[0])
fig.suptitle("Channel {}".format(t_stream[0].stats.channel))
# Customize layout to pack to top of page while preserving RF plots aspect ratios
_rf_layout_A4(fig)
# Save to new page in file
pdf.savefig(dpi=300, papertype='a4', orientation='portrait')
plt.close()
# end if
# Plot H-k stack using primary RF component
fig, maxima = _produce_hk_stacking(rf_stream,
weighting=hk_weights,
labelling=hk_solution_labels,
V_p=hk_vp)
if save_hk_solution and hk_hpf_freq is None:
hk_soln[st] = maxima
station_coords[st] = (channel_data[0].stats.station_latitude,
channel_data[0].stats.station_longitude)
# end if
paper_landscape = (paper_size_A4[1], paper_size_A4[0])
fig.set_size_inches(*paper_landscape)
# plt.tight_layout()
# plt.subplots_adjust(hspace=0.15, top=0.95, bottom=0.15)
pdf.savefig(dpi=300, papertype='a4', orientation='landscape')
plt.close()
if hk_hpf_freq is not None:
# Repeat H-k stack with high pass filtering
fig, maxima = _produce_hk_stacking(
rf_stream,
weighting=hk_weights,
labelling=hk_solution_labels,
V_p=hk_vp,
filter_options={
'type': 'highpass',
'freq': hk_hpf_freq,
'corners': 1,
'zerophase': True
})
if save_hk_solution:
hk_soln[st] = maxima
station_coords[st] = (
channel_data[0].stats.station_latitude,
channel_data[0].stats.station_longitude)
# end if
fig.set_size_inches(*paper_landscape)
pdf.savefig(dpi=300, papertype='a4', orientation='landscape')
plt.close()
# end if
# end for
pbar.close()
# end with
# Save H-k solutions to CSV file
if hk_soln:
assert len(hk_soln) == len(station_coords)
# Sort H-k solutions by depth from low to high
update_dict = {}
for st, hks in hk_soln.items():
sorted_hks = sorted([tuple(hk) for hk in hks])
update_dict[st] = np.array(
list(station_coords[st]) +
[i for hk in sorted_hks for i in hk])
# end for
hk_soln.update(update_dict)
df = pd.DataFrame.from_dict(hk_soln, orient='index')
colnames = [('H{}'.format(i), 'k{}'.format(i))
for i in range((len(df.columns) - 2) // 2)]
colnames = ['Latitude', 'Longitude'] + list(
itertools.chain.from_iterable(colnames))
df.columns = colnames
csv_fname, _ = os.path.splitext(output_file)
csv_fname += '.csv'
df.index.name = 'Station'
df.to_csv(csv_fname)
def main():
"""Main entry function for RF picking tool.
"""
infile = filedialog.askopenfilename(initialdir=".",
title="Select RF file",
filetypes=(("h5 files", "*.h5"), ))
output_folder = filedialog.askdirectory(
initialdir=os.path.split(infile)[0], title='Select output folder')
if not os.path.isdir(output_folder):
log.info("Creating output folder {}".format(output_folder))
os.makedirs(output_folder, exist_ok=True)
# end if
log.info("Output files will be emitted to {}".format(output_folder))
log.info("Loading %s", infile)
data_all = rf_util.read_h5_rf(infile)
data_dict = rf_util.rf_to_dict(data_all)
stations = sorted(list(data_dict.keys()))
# Assuming same rotation type for all RFs. This is consistent with the existing workflow.
rf_type = data_all[0].stats.rotation
for st in stations:
station_db = data_dict[st]
# Choose RF channel
channel = rf_util.choose_rf_source_channel(rf_type, station_db)
channel_data = station_db[channel]
# Check assumption
for tr in channel_data:
assert tr.stats.rotation == rf_type, 'Mismatching RF rotation type'
# Label and filter quality
rf_util.label_rf_quality_simple_amplitude(rf_type, channel_data)
rf_stream = rf.RFStream([
tr for tr in channel_data if tr.stats.predicted_quality == 'a'
]).sort(['back_azimuth'])
if not rf_stream:
log.info("No data survived filtering for %s, skipping", st)
continue
# Plot RF stack of primary component
fig = rf_plot_utils.plot_rf_stack(rf_stream)
fig.set_size_inches(8, 9)
fig.suptitle("Channel {}".format(rf_stream[0].stats.channel))
ax0 = fig.axes[0]
# Make sure we draw once first before capturing blit background
fig.canvas.draw()
# Disallow resizing to avoid having to handle blitting with resized window.
win = fig.canvas.window()
win.setFixedSize(win.size())
blit_background = fig.canvas.copy_from_bbox(ax0.bbox)
mask = np.array([False] * len(rf_stream))
rect_select = RectangleSelector(ax0,
lambda e0, e1: on_select(e0, e1, mask),
useblit=True,
rectprops=dict(fill=False,
edgecolor='red'))
cid = fig.canvas.mpl_connect(
'button_release_event',
lambda e: on_release(e, ax0, mask, blit_background, rect_select))
plt.show()
fig.canvas.mpl_disconnect(cid)
rect_select = None
selected_event_ids = [
tr.stats.event_id for i, tr in enumerate(rf_stream) if mask[i]
]
log.info("{} streams selected".format(len(selected_event_ids)))
log.info("Selected event ids:")
log.info(selected_event_ids)
network = rf_stream[0].stats.network
outfile = os.path.join(
output_folder,
'.'.join([network, st, channel]) + '_event_mask.txt')
log.info("Writing mask to file {}".format(outfile))
if os.path.exists(outfile):
log.warning("Overwriting existing file {} !".format(outfile))
with open(outfile, 'w') as f:
f.write('\n'.join(selected_event_ids))