def tostream(model_instances, attr):
"""
Returns a Stream from each getattr(model_instance, attr), where model_instance is in turn
each element of model_instances (an ORM model instance)
Returns a Trace if model_instance is a single model instance
"""
traces = []
ret_stream = True
if not hasattr(model_instances, "__iter__"):
model_instances = [model_instances]
ret_stream = False
for mis in model_instances:
if not mis:
tra = Trace(np.array([]), header={'id': 'NotFound'})
else:
data = getattr(mis, attr)
tra = loads(data).traces[0]
if isinstance(tra, Stream) and len(tra) == 1:
# usually it's a single trace Stream (implementation choice)
tra = tra[0]
traces.append(tra)
return Stream(traces) if ret_stream else traces[0]
def get_data(session, seg_id):
seg = session.query(Segment).filter(Segment.id == seg_id).first()
# stream = loads(seg.data) if seg else Stream(traces=[Trace(np.array([]),
# header={'id': 'Not found'})]*3)
# FIXME: better query with relationships possible!
segs = []
if seg:
segs = [seg]
# get same segments same station:
same_channels_rows = session.query(Segment).join(Channel).join(Station).\
filter((Station.id == seg.channel.station.id) &
(Channel.location == seg.channel.location) &
(Segment.start_time == seg.start_time) &
(Segment.end_time == seg.end_time)).all()
# get those with only third component different
for sss in same_channels_rows:
if sss.id != seg_id and sss.channel.channel[:2] == seg.channel.channel[:2]:
segs.append(sss)
segs += [None] * max(0, 3 - len(segs)) # pad with Nones
# Get processings: we have currently one processings per segment, but we might have more
# in the future. So take last one. this process is cumbersome we might use database query more
# clearly and efficiently:
pros = []
for sss in segs:
pro = None
if sss is not None:
for pro_ in sss.processings:
if pro is None or pro.run.run_id < pro_.run.run_id:
pro = pro_
pros.append(pro)
# define interpolation values
MAX_NUM_PTS_TIMESCALE = 1050
MAX_NUM_PTS_FREQSCALE = 215
filtered_stream = tostream(pros, 'mseed_rem_resp_savewindow')
times, filtered_stream = interpolate(filtered_stream, MAX_NUM_PTS_TIMESCALE,
align_if_stream=True, return_x_array=True)
stream = tostream(segs, 'data')
_, stream = interpolate(stream, times,
align_if_stream=True, return_x_array=True)
cumulative_trace = tostream(pros[0], 'cum_rem_resp')
cumulative_trace = interpolate(cumulative_trace, times)
evlp_trace = env(filtered_stream[0])
evlp_trace = interpolate(evlp_trace, times)
# snr_stream = [[], []] if not pros[0] else \
# [loads(pros[0].fft_rem_resp_until_atime), loads(pros[0].fft_rem_resp_t05_t95)]
time_data = {'labels': tojson(np.round(times * 1000.0)), 'datasets': []}
datasets = time_data['datasets']
# create datasets for chart.js:
title = segs[0].channel.id
datasets.append(to_chart_dataset(stream[0].data, title))
datasets.append(to_chart_dataset(filtered_stream[0].data, title + " (Rem.resp+filtered)"))
datasets.append(to_chart_dataset(stream[1].data, stream[1].id))
datasets.append(to_chart_dataset(filtered_stream[1].data, stream[1].id +
" (Rem.resp+filtered)"))
datasets.append(to_chart_dataset(stream[2].data, stream[2].id))
datasets.append(to_chart_dataset(filtered_stream[2].data, stream[2].id +
" (Rem.resp+filtered)"))
# cumulative:
datasets.append(to_chart_dataset(cumulative_trace.data, title +
" (Cumulative Rem.resp+filtered)"))
# envelope
datasets.append(to_chart_dataset(evlp_trace.data, title +
" (Envelope Rem.resp+filtered)"))
noisy_trace, sig_trace = (Trace(data=np.array([])), Trace(data=np.array([]))) \
if not pros[0] else \
(loads(pros[0].fft_rem_resp_until_atime)[0], loads(pros[0].fft_rem_resp_t05_t95)[0])
noisy_trace.data = amp_spec(noisy_trace.data, signal_is_fft=True)
sig_trace.data = amp_spec(sig_trace.data, signal_is_fft=True)
freqz = freqs(noisy_trace.data, dfreq(noisy_trace))
# interpolate (less pts):
newfreqz, noisy_trace.data = analysis_interp(MAX_NUM_PTS_FREQSCALE, freqz, noisy_trace.data)
_, sig_trace.data = analysis_interp(newfreqz, freqz, sig_trace.data)
freqz = newfreqz
freqs_log = np.log10(freqz[1:])
freq_data = {'datasets': []}
datasets = freq_data['datasets']
# smooth signal:
bwd = 100
noisy_amps = kos(noisy_trace.data, freqz, bandwidth=bwd)
sig_amps = kos(sig_trace.data, freqz, bandwidth=bwd)
datasets.append(to_chart_dataset(noisy_amps[1:], title +
" (Noise Rem.resp+filtered)", freqs_log))
datasets.append(to_chart_dataset(sig_amps[1:], title +
" (Signal Rem.resp+filtered)", freqs_log))
seg = segs[0]
metadata = []
metadata.append(["EVENT", ''])
metadata.append(["magnitude", seg.event.magnitude])
metadata.append(["CHANNEL", ''])
metadata.append(["id", seg.channel.id])
metadata.append(["sample_rate", seg.channel.sample_rate])
for title, instance in [('SEGMENT', seg), ('PROCESSING', pros[0])]:
metadata.append([title, ''])
for c in instance.__table__.columns:
if isinstance(c.type, Binary) or len(c.foreign_keys):
# len(c.foreign_keys) tells if c is a fkey: found no nicer way to tell it
continue
val = getattr(instance, c.key)
if isinstance(c.type, DateTime):
val = None if val is None else UTCDateTime(val)
metadata.append([c.key, val])
# load config
config = yaml.safe_load(seg.run.config)
# before addding config add custom data (processing):
metadata.append(['arrival_time (+ config delay)', UTCDateTime(seg.arrival_time) +
config['processing']['arrival_time_delay']])
metadata.append(['noise_fft_start', (UTCDateTime(seg.arrival_time) +
config['processing']['arrival_time_delay']) -
(UTCDateTime(pros[0].cum_t95) - UTCDateTime(pros[0].cum_t05))])
# metadata.append(("", ""))
# We use safe_dump now to avoid python types. However, fix the unicode issue. See here:
# http://stackoverflow.com/questions/27518976/how-can-i-get-pyyaml-safe-load-to-handle-python-unicode-tag
# commented out: ANY PYTHON SPECIFIC STUFF IS UNREDABLE. Modified read funtion
# yaml.SafeLoader.add_constructor("tag:yaml.org,2002:python/unicode",
# lambda loader, node: node.value)
dicts = ['CONFIG', config]
while len(dicts):
title, dct = dicts.pop(0), dicts.pop(0)
metadata.append([title, ""])
for key, val in dct.iteritems():
if isinstance(val, dict):
dicts += [(title+"."+key).upper(), val]
continue
else:
metadata.append([key, val])
# metadata.append(["Config", seg.run.config]) # .replace("\n", "<br>")))
# convert datetimes for moment.js:
for val in metadata:
if isinstance(val[1], UTCDateTime):
momentjs_timestamp = round(val[1].timestamp * 1000)
if "start_date" in val[0]:
val[1] = "[__DATE__]%s" % str(momentjs_timestamp)
else:
val[1] = "[__TIME__]%s" % str(momentjs_timestamp)
class_ids = get_segment_classes(session, segs[0].id)
return {'time_data': time_data, 'freq_data': freq_data, 'metadata': metadata,
'class_ids': class_ids}