def read_frame(frame, channel, st=None, et=None, cfac=1.589459e-9):
"""
reads ligo frames
Parameters
----------
frame : `str`
filepath to a frame
channel : `str`
channel in the frame to load
st : `int`, date string, optional
optional start time. defaults to beginning
of frame
et : `int ,date string, optional
optional end time. defaults to end
of frame
Returns
-------
TS : `Trace`
time series trace
"""
if st is not None and et is not None:
d1 = cfac * Trace.read(frame, channel, st, et).detrend()
d2 = TimeSeries.read(frame, channel, st, et, format='lalframe')
else:
d1 = cfac * Trace.read(frame, channel).detrend()
d2 = TimeSeries.read(frame, channel, format='lalframe')
d1 = Trace(d1.value)
d1.__dict__ = d2.copy_metadata()
d1.location = d1.get_location()
return d1
def read_frame(filename, ifo, readstrain=True, strain_chan=None, dq_chan=None, inj_chan=None):
"""
Helper function to read frame files
"""
from gwpy.timeseries import TimeSeries
if ifo is None:
raise TypeError("""To read GWF data, ifo must be 'H1', 'H2', or 'L1'.
def loaddata(filename, ifo=None):""")
#-- Read strain channel
if strain_chan is None:
strain_chan = ifo + ':LOSC-STRAIN'
if readstrain:
try:
sd = TimeSeries.read(filename, strain_chan)
strain = sd.value
gpsStart = sd.t0.value
ts = sd.dt.value
except:
print("ERROR reading file {0} with strain channel {1}".format(filename, strain_chan))
raise
else:
ts = 1
strain = 0
#-- Read DQ channel
if dq_chan is None:
dq_chan = ifo + ':LOSC-DQMASK'
try:
qd = TimeSeries.read(str(filename), str(dq_chan))
gpsStart = qd.t0.value
qmask = np.array(qd.value)
dq_ts = qd.dt.value
shortnameList_wbit = str(qd.unit).split()
shortnameList = [name.split(':')[1] for name in shortnameList_wbit]
except:
print("ERROR reading DQ channel '{0}' from file: {1}".format(dq_chan, filename))
raise
#-- Read Injection channel
if inj_chan is None:
inj_chan = ifo + ':LOSC-INJMASK'
try:
injdata = TimeSeries.read(str(filename), str(inj_chan))
injmask = injdata.value
injnamelist_bit = str(injdata.unit).split()
injnamelist = [name.split(':')[1] for name in injnamelist_bit]
except:
print("ERROR reading injection channel '{0}' from file: {1}".format(inj_chan, filename))
raise
return strain, gpsStart, ts, qmask, shortnameList, injmask, injnamelist
def generate_fast_vco(ifo, segment, frames=False, fit=True):
"""
Parameters:
-----------
ifo : start
interferometer, e.g. 'L1'
segment : array like
time segment. first entry start second entry end
frames : bool
read from frames or nds2
fit : bool
fit from imc-f (default)
or spline interpolation
Returns:
--------
vco_data : saves file 'L1:IMC-VCO_PREDICTION-st-dur.hdf'
"""
st = segment[0]
et = segment[1]
chan1_pat = '%s:SYS-TIMING_C_FO_A_PORT_11_SLAVE_CFC_FREQUENCY_5'
chan2_pat = '%s:IMC-F_OUT_DQ'
if frames:
connection = datafind.GWDataFindHTTPConnection()
cache = connection.find_frame_urls(
ifo[0], '%s_R' % ifo, st, et + 1, urltype='file')
if fit:
imc = TimeSeries.read(cache, chan2_pat % ifo, st, et)
else:
imc = TimeSeries.read(cache, chan2_pat % ifo, st, st + 1)
pslvco = TimeSeries.read(cache, chan1_pat % ifo, st, et + 1)
else:
if fit:
imc = TimeSeries.fetch(chan2_pat % ifo, st, et)
else:
print 'HI BEFORE LOADING IMC'
imc = TimeSeries.fetch(chan2_pat % ifo, st, st + 1)
print 'HI BEFORE LOADING PSL'
pslvco = TimeSeries.fetch(chan1_pat % ifo, st, et + 1)
print 'HI AFTER LOADING'
pslvco = pslvco[16 + 8::16]
if fit:
imc_srate = int(imc.sample_rate.value)
imc2 = imc[imc_srate / 2::imc_srate]
data = np.array((imc2.value, pslvco.value)).T
vco_interp = fit_with_imc(data, imc)
else:
vco_interp = interp_spline(pslvco)
chan = "%s:IMC-VCO_PREDICTION" % (ifo,)
vco_data = TimeSeries(vco_interp, epoch=st,
sample_rate=256,
name=chan, channel=chan)
return vco_data
def generate_fast_vco(ifo, segment, frames=False, fit=True):
"""
Parameters:
-----------
ifo : start
interferometer, e.g. 'L1'
segment : array like
time segment. first entry start second entry end
frames : bool
read from frames or nds2
fit : bool
fit from imc-f (default)
or spline interpolation
Returns:
--------
vco_data : saves file 'L1:IMC-VCO_PREDICTION-st-dur.hdf'
"""
st = segment[0]
et = segment[1]
chan1_pat = '%s:SYS-TIMING_C_FO_A_PORT_11_SLAVE_CFC_FREQUENCY_5'
chan2_pat = '%s:IMC-F_OUT_DQ'
if frames:
connection = datafind.GWDataFindHTTPConnection()
cache = connection.find_frame_urls(
ifo[0], '%s_R' % ifo, st, et + 1, urltype='file')
if fit:
imc = TimeSeries.read(cache, chan2_pat % ifo, st, et)
else:
imc = TimeSeries.read(cache, chan2_pat % ifo, st, st + 1)
pslvco = TimeSeries.read(cache, chan1_pat % ifo, st, et + 1)
else:
if fit:
imc = TimeSeries.fetch(chan2_pat % ifo, st, et)
else:
imc = TimeSeries.fetch(chan2_pat % ifo, st, st + 1)
pslvco = TimeSeries.fetch(chan1_pat % ifo, st, et + 1)
pslvco = pslvco[16 + 8::16]
if fit:
imc_srate = int(imc.sample_rate.value)
imc2 = imc[imc_srate / 2::imc_srate]
data = np.array((imc2.value, pslvco.value)).T
vco_interp = fit_with_imc(data, imc)
else:
vco_interp = interp_spline(pslvco)
chan = "%s:IMC-VCO_PREDICTION" % (ifo,)
vco_data = TimeSeries(vco_interp, epoch=st,
sample_rate=256,
name=chan, channel=chan)
return vco_data
def get_array2d(start,end,axis='X',prefix='./data',**kwargs):
'''
'''
nproc = kwargs.pop('nproc',4)
bandpass = kwargs.pop('bandpass',None)
blrms = kwargs.pop('blrms',None)
fftlen = kwargs.pop('fftlen',2**8)
overlap = fftlen/2
# check existance of the spectrogram data
fname_hdf5 = fname_hdf5_asd(start,end,prefix,axis)
if os.path.exists(fname_hdf5):
specgram = Spectrogram.read(fname_hdf5)
if blrms:
timeseries = specgram.crop_frequencies(blrms[0],blrms[1]).sum(axis=1)
return timeseries
return specgram
# If spectrogram dose not exist, calculate it from timeseries data.
try:
fname = fname_gwf(start,end,prefix='./data')
chname = get_seis_chname(start,end,axis=axis)
# check existance of the timeseries data
if os.path.exists(fname):
data = TimeSeries.read(fname,chname,nproc=nproc)
else:
# when timeseries data dose not exist
fnamelist = existedfilelist(start,end)
chname = get_seis_chname(start,end)
datadict = TimeSeriesDict.read(fnamelist,chname,nproc=nproc)
datadict = datadict.resample(32)
datadict = datadict.crop(start,end)
chname = get_seis_chname(start,end,axis=axis)
datadict.write(fname,format='gwf.lalframe')
data = TimeSeries.read(fname,chname,nproc=nproc)
# If data broken, raise Error.
if data.value.shape[0] != 131072:
log.debug(data.value.shape)
log.debug('####### {0} {1}'.format(start,end))
raise ValueError('data broken')
except:
log.debug(traceback.format_exc())
raise ValueError('!!!')
# if data broken, raise Error.
if data.value.shape[0] != 131072: # (131072 = 2**17 = 2**12[sec] * 2**5[Hz] )
log.debug(data.value.shape)
log.debug('!!!!!!!! {0} {1}'.format(start,end))
raise ValueError('data broken')
# calculate from timeseries data
specgram = data.spectrogram2(fftlength=fftlen,overlap=overlap,nproc=nproc)
specgram.write(fname_hdf5,format='hdf5',overwrite=True)
return specgram
def channeling_read(out_channels: List[str], **kwargs) -> TimeSeriesDict:
out = TimeSeriesDict()
for channel in out_channels:
for prefix in search_dirs:
for in_channel in in_channels:
try:
# lock the target file
h5file, _ = path2h5file(get_path(
f'{in_channel} {generation_start}',
'hdf5',
prefix=prefix),
mode='r')
# read off the dataset
out[channel] = TimeSeries.read(h5file, channel,
**kwargs)
except (FileNotFoundError, KeyError, OSError):
# file not found / hdf5 can't open file (OSError), channel not in file (KeyError)
continue
break
else:
continue
break
else:
# tried all search dirs but didn't find it. Attempt to download.
raise FileNotFoundError(f'CANNOT FIND {channel}!!')
# out[channel] = TimeSeries.get(channel, **kwargs) # slow.
return out
def test_ascii_read(self):
fp = self.test_ascii_write(delete=False)
try:
ts = TimeSeries.read(fp)
finally:
if os.path.isfile(fp):
os.remove(fp)
def check_idq(cache, channel, start, end):
"""Looks for iDQ frame and reads them.
Parameters
----------
cache : :class:`glue.lal.Cache`
Cache from which to check.
channel : str
which idq channel (pglitch)
start, end: int or float
GPS start and end times desired.
Returns
-------
tuple
Tuple mapping iDQ channel to its maximum P(glitch).
Example
-------
>>> check_idq(cache, 'H1:IDQ-PGLITCH-OVL-100-1000',
1216496260, 1216496262)
('H1:IDQ-PGLITCH-OVL-100-1000', 0.87)
"""
if cache:
try:
idq_prob = TimeSeries.read(cache, channel, start=start, end=end)
return (channel, float(idq_prob.max()))
except RuntimeError:
log.exception('Failed to read from low-latency iDQ frame files')
# FIXME: figure out how to get access to low-latency frames outside
# of the cluster. Until we figure that out, actual I/O errors have
# to be non-fatal.
return (channel, None)
def get_data(channel,start_time,length):
print 'Starting data transfer for channel: ' + str(channel)
connection = datafind.GWDataFindHTTPConnection()
cache = connection.find_frame_urls(ifo[0],ifo+'_R',start_time,start_time+length,urltype='file')
data = TimeSeries.read(cache,channel)
print "Got data for channel: " + str(channel)
return data
def get_timeseries(chname,**kwargs):
start = kwargs.pop('start',None)
end = kwargs.pop('end',None)
nds = kwargs.pop('nds',None)
fname = to_gwffname(chname,**kwargs)
if os.path.exists(fname):
print('{0} exist.',format(fname))
print('Skip fetch from nds {0}'.format(fname))
data = TimeSeries.read(fname,chname,start,end,
format='gwf.lalframe',
verbose=True,
pad=np.nan)
return data
elif nds and not os.path.exists(fname):
print('{0} dose not exist.',format(fname))
data = TimeSeries.fetch(chname, start, end,
verbose=True,
host='10.68.10.121', port=8088,
pad=np.nan,
verify=True,type=1,dtype=np.float32)
data.write(fname,format='gwf.lalframe')
print('wrote data in '+fname)
return data
else:
print(nds)
print(os.path.exists(fname))
print(fname)
raise ValueError('! Must use nds or load files')
exit()
def generate_gauss_ifo_data(ifoparams, generalparams):
# generate gaussian data
asd1 = MagSpectrum.read(ifoparams['gw_noise_asd'])
if asd1.f0.value != 0:
raise ValueError('Initial frequency of supplied ASDs must be zero')
# get psd
psd1 = MagSpectrum(asd1.value**2,
df=asd1.df,
f0=asd1.f0,
name=ifoparams['name'] + ':gauss_data')
fname = (generalparams['output_prefix'] + '/' + 'gaussian_frames/' +
'%s-GAUSSIAN-DATA-%d-DAYS.gwf')
ndays = float(generalparams['ndays'])
# generate gaussian noise
print('Generating noise for %s:' % ifoparams['name'])
print('Writing it to ' + fname % (ifoparams['name'], float(ndays)))
print('============================')
ts1 = psd1.generate_gaussian_timeseries(float(ndays) * 86400,
float(
generalparams['sample_rate']),
name=psd1.name)
ts1.write(str(fname % (ifoparams['name'], ndays))) # , overwrite=True)
ts1_read = TimeSeries.read(str(fname % (ifoparams['name'], ndays)),
ifoparams['name'] + ':gauss_data')
plot = ts1.asd(10).plot()
ax = plot.gca()
ax.plot(asd1)
ax.plot(ts1_read.asd(10))
plot.savefig('gauss_data_plot_test')
print('>>>>>>> DONE GENERATING GAUSSIAN NOISE')
def main(centerTime,duration,frameTypes,channelNames,detectors,rightascension,declination,FFTlength,sampleFrequency):
#----- Start and stop time for this event.
startTime = centerTime - duration / 2;
stopTime = centerTime + duration / 2;
# zip frameTypes and detectors, and channel names and detectors
frameType = dict(zip(detectors,frameTypes))
channelName = dict(zip(detectors,channelNames))
data = dict()
white_data = dict()
# Read in the data
for iDet in detectors:
connection = datafind.GWDataFindHTTPConnection()
cache = connection.find_frame_urls(iDet.strip('1'), frameType[iDet], startTime, stopTime, urltype='file')
data[iDet] = TimeSeries.read(cache,channelName[iDet], format='gwf',start=startTime,end=stopTime)
for (iDet,iSeries) in data.iteritems():
# resample data
if iSeries.sample_rate.decompose().value != sampleFrequency:
iSeries = iSeries.resample(sampleFrequency)
asd = iSeries.asd(FFTlength, FFTlength/2., method='median-mean')
# Apply ASD to the data to whiten it
whitened = iSeries.whiten(FFTlength, FFTlength/2., asd=asd)
white_data[iDet] = whitened.fft()
def main_compare_gif_gotic2():
start = tconvert('Oct 15 2018 00:00:00')
end = tconvert('Oct 21 2018 00:00:00')
# gif data
pfx = '/Users/miyo/Dropbox/KagraData/gif/'
segments = GifData.findfiles(start, end, 'CALC_STRAIN', prefix=pfx)
allfiles = [path for files in segments for path in files]
strain = TimeSeries.read(source=allfiles,
name='CALC_STRAIN',
format='gif',
pad=numpy.nan,
nproc=2)
strain = strain.detrend('linear')
# gotic data
source = '201805010000_201811010000.gotic'
gifx = KagraGoticStrain.read(source, start=start, end=end).x
gifx = gifx.detrend('linear')
gifx = gifx * 0.9
# plot
plot = Plot(gifx, strain, xscale='auto-gps')
plot.legend()
plot.subplots_adjust(right=.86)
plot.savefig('result.png')
plot.close()
def load_data(self, gps_start, gps_end, ifos, fs, channel='GATED'):
"""
return dict(ifo : gwStrain)
"""
#print(self._contents)
gps_seg = TimeSegment(gps_start, gps_end)
ret = dict()
for ifo in ifos:
channel_name = f'{ifo}_{channel}'
if channel in channel_dict:
channel_ifo = channel_dict[channel_name]
else:
channel_ifo = channel_name
value = np.array([])
epoch = gps_start
check_epoch = True
for frame, timeseg, fname in self._iter_segment(ifo):
seg = gps_seg.check_overlap(timeseg)
if seg is None:
continue
if check_epoch:
epoch = seg.start
check_epoch = False
data = TimeSeries.read(fname, channel_ifo)
srate = data.sample_rate.value
idx = seg.get_idx(timeseg.start, srate)
data = data[idx]
if fs != srate:
data = resample(data, srate, fs)
value = np.insert(value, len(value), data)
ret[ifo] = gwStrain(value, epoch, ifo, fs, info=f'{ifo}_strain')
return ret
def load_data_manual(gpsstart, gpsend, ifo, channel, fs=4096):
# This method will reset self.value & self.epoch & self.duration
filelist, glist = find_data_path(ifo, gpsstart, gpsend)
if len(filelist) == 0:
return CEV.PROCESS_FAIL
argsrt = np.argsort(np.asarray(glist))
value = np.array([])
epoch = int(gpsstart)
for idx in argsrt:
fname = filelist[idx]
data = TimeSeries.read(fname, channel)
srate = data.sample_rate.value
gf0, gf1 = parse_datafile(fname.name)
if epoch < gf0:
dataidx0 = 0
if len(value) == 0:
epoch = gf0
else:
dataidx0 = int((epoch - gf0) * srate)
if gpsend > gf1:
dataidx1 = data.size
else:
dataidx1 = int((gpsend - gf0) * srate) + 1
value = np.concatenate([value, data.value[dataidx0:dataidx1]])
ret = gwStrain(value, epoch, ifo, srate, info=f'{ifo}_strain')
if fs != srate:
return ret.resample(fs)
return ret
def raw_to_bandpass(strain_file, t_event, detector, bp_lo, bp_hi):
strain = TimeSeries.read(strain_file, format='hdf5.losc')
center = int(tevent)
strain = strain.crop(center - 16, center + 16)
white_data = strain.whiten()
white_data_bp = white_data.bandpass(bp_lo, bp_hi)
return white_data_bp
def calibrate_imc_pslvco(ifo, start_time, dur, cache=None):
st, et = start_time, start_time + dur
if cache:
pslvco = TimeSeries.read(cache, chan1_pat % ifo, start=st, end=et)
imc = TimeSeries.read(cache, chan2_pat % ifo, start=st, end=et)
else:
imc = TimeSeries.fetch(chan2_pat % ifo, st, et)
pslvco = TimeSeries.fetch(chan1_pat % ifo, st, et)
arr_psl = pslvco[8::16]
arr_imc = imc
tmp1 = (arr_imc[8192::16384])[:-1]
tmp2 = arr_psl[1:]
a, b = numpy.polyfit(tmp1, tmp2, 1)
return a, b
def psd():
h5path = os.path.join(os.path.dirname(__file__), 'data',
'HLV-HW100916-968654552-1.hdf')
try:
data = TimeSeries.read(h5path, 'L1:LDAS-STRAIN', format='hdf5')
except ImportError as e:
pytest.skip(str(e))
return data.psd(.4, overlap=.2, window=('kaiser', 24))
def calibrate_imc_pslvco(ifo, start_time, dur, cache=None):
st, et = start_time, start_time + dur
if cache:
pslvco = TimeSeries.read(cache, chan1_pat % ifo, start=st, end=et)
imc = TimeSeries.read(cache, chan2_pat % ifo, start=st, end=et)
else:
imc = TimeSeries.fetch(chan2_pat % ifo, st, et)
pslvco = TimeSeries.fetch(chan1_pat % ifo, st, et)
arr_psl = pslvco[8::16]
arr_imc = imc
tmp1 = (arr_imc[8192::16384])[:-1]
tmp2 = arr_psl[1:]
a, b = numpy.polyfit(tmp1, tmp2, 1)
return a, b
def psd():
h5path = os.path.join(os.path.dirname(__file__), 'data',
'HLV-GW100916-968654552-1.hdf')
try:
data = TimeSeries.read(h5path, 'L1:LDAS-STRAIN', format='hdf5')
except ImportError as e:
pytest.skip(str(e))
return data.psd(.4, overlap=.2, window=('kaiser', 24))
def append(self, filename, duration):
try:
data = TimeSeries.read(filename, self._channel)
self._value = np.concatenate([self._value, data])
except:
data = np.zeros(self._fs * duration)
self._value = np.concatenate([self._value, data])
self._broken_time += duration
self._duration += duration
def Grab_Sfiles(start, end, run, channel, frame):
"""Return a list of Time Series pulled from files stored in this script's directory.
Arguments:
run -- String representing an observing run (ie O1, O2, O3a, etc).
Otherwise as for Grab_Series().
Returns:
As for Grab_Series()."""
modesl = []
entries = os.listdir('Local_Data/{}/{}'.format(run, channel))
for ends in Seg_Split(start, end, frame):
for entry in entries:
file = 'Local_Data/{}/{}/{}'.format(run, channel, entry)
series = TimeSeries.read(file, channel)
if series.times[0].value<=ends[0]<series.times[-1].value:
modes = TimeSeries.read(file, channel, ends[0], ends[-1], verbose=True)
modesl.append(modes)
break
return modesl
def read_gif(chname, start, end, write=False):
segments = GifData.findfiles(start, end, chname, prefix=pfx)
allfiles = [path for files in segments for path in files]
data = TimeSeries.read(source=allfiles,
name=chname,
format='gif',
pad=np.nan,
nproc=2)
data.name = chname
return data
def load_inject_condition(t_i, t_f, t_inj, inj_type, inj_params=None, local=False, Tc=16, To=2, fw=2048, window='tukey', detector='H', qtrans=False, qsplit=False, dT=2.0, hp=None, save=False, data_path=None): """Fucntion to load a chunk, inject a waveform and condition, created to enable parallelizing. """ if local: files = get_files(detector) try: data = TimeSeries.read(files, start=t_i, end=t_f, format='hdf5.losc') # load data locally except: return else: # load data from losc try: data = TimeSeries.fetch_open_data(detector + '1', *(t_i, t_f), sample_rate=fw, verbose=False, cache=True) except: return if np.isnan(data.value).any(): return wf_times = data.times.value if inj_type == 'ccsn': shift = int((t_inj - (wf_times[0] + Tc/2)) * fw) hp = np.roll(hp.value, shift) hp = TimeSeries(hp, t0=wf_times[0], dt=data.dt) try: hp = hp.taper() except: pass injected_data = data.inject(hp) else: injected_data = inject(data, t_inj, inj_type, inj_params) cond_data = condition_data(injected_data, To, fw, window, qtrans, qsplit, dT) x = [] times = [] for dat in cond_data: x.append(dat.values) times.append(dat.t0) x = np.asarray(x) times = np.asarray(times) idx = find_closest_index(t_inj, times) x = x[idx] times = times[idx] return x, times
def dump_calibrated_data(fname):
data = numpy.load(fname)
# Figure out the times covered by the file from the filename
# I should start using HDF5 so I can store metadata
temp = fname.split('.')[0]
temp = temp.split('-')
ifo = temp[0]
st, dur = int(temp[-2]), int(temp[-1])
et = st + dur
maxidx = len(data)
width = 45
weights = 1. - ((numpy.arange(-width, width) / float(width))**2)
# The VCO frequencies are integers so we could dither them
# to avoid quantization error if we wanted to be fancy
# but it seems to make no differece
if False:
from numpy.random import triangular
data[:, 1] += triangular(-1., 0., 1., size=len(data))
# Just fit the whole thing at once, to get a single coefficient
a, b = numpy.polyfit(data[:, 0], data[:, 1], 1)
print "%.1f %u" % (a, b)
# Slide through the data fitting PSL to IMC for data around each sample
coeffs = []
for idx in xrange(maxidx):
idx1 = max(0, idx - width)
idx2 = min(idx + width, maxidx)
coeffs.append(numpy.polyfit(data[idx1:idx2, 0], data[idx1:idx2, 1], 1,
w=weights[idx1 - idx + width:idx2 - idx + width]))
coeffs = numpy.array(coeffs)
times = numpy.arange(len(coeffs)) + 0.5
connection = datafind.GWDataFindHTTPConnection()
cache = connection.find_frame_urls(
ifo[0], '%s_R' % ifo, st, et, urltype='file')
imc = TimeSeries.read(cache, "%s:IMC-F_OUT_DQ" % ifo, st, et)
imc = imc[::16384 / 256]
print imc
samp_times = numpy.arange(len(imc)) / 256.
coeffs0 = numpy.interp(samp_times, times, coeffs[:, 0])
coeffs1 = numpy.interp(samp_times, times, coeffs[:, 1]) - 7.6e7
vco_interp = coeffs0 * imc.data + coeffs1
chan = "%s:IMC-VCO_PREDICTION" % (ifo,)
vco_data = TimeSeries(vco_interp, epoch=st,
sample_rate=imc.sample_rate.value,
name=chan, channel=chan)
vco_data.write("%s-vcoprediction-%u-%u.hdf" % (ifo, st, dur), format='hdf')
def get_open_strain_data(
name, start_time, end_time, outdir, cache=False, buffer_time=0, **kwargs):
""" A function which accesses the open strain data
This uses `gwpy` to download the open data and then saves a cached copy for
later use
Parameters
==========
name: str
The name of the detector to get data for
start_time, end_time: float
The GPS time of the start and end of the data
outdir: str
The output directory to place data in
cache: bool
If true, cache the data
buffer_time: float
Time to add to the beginning and end of the segment.
**kwargs:
Passed to `gwpy.timeseries.TimeSeries.fetch_open_data`
Returns
=======
strain: gwpy.timeseries.TimeSeries
The object containing the strain data. If the connection to the open-data server
fails, this function returns `None`.
"""
from gwpy.timeseries import TimeSeries
filename = '{}/{}_{}_{}.txt'.format(outdir, name, start_time, end_time)
if buffer_time < 0:
raise ValueError("buffer_time < 0")
start_time = start_time - buffer_time
end_time = end_time + buffer_time
if os.path.isfile(filename) and cache:
logger.info('Using cached data from {}'.format(filename))
strain = TimeSeries.read(filename)
else:
logger.info('Fetching open data from {} to {} with buffer time {}'
.format(start_time, end_time, buffer_time))
try:
strain = TimeSeries.fetch_open_data(name, start_time, end_time, **kwargs)
logger.info('Saving cache of data to {}'.format(filename))
strain.write(filename)
except Exception as e:
logger.info("Unable to fetch open data, see debug for detailed info")
logger.info("Call to gwpy.timeseries.TimeSeries.fetch_open_data returned {}"
.format(e))
strain = None
return strain
def make_omegascan(ifo, t0, durs):
"""Helper function to create a single omegascan image, with
multiple durations.
Parameters
----------
ifo : str
'H1', 'L1', or 'V1'
t0 : int or float
Central time of the omegascan.
durs : list of floats/ints
List of three durations which will be scanned symmetrically about t0.
Example: [0.5, 2, 10]
Returns
-------
bytes or None
bytes of png of the omegascan, or None if no omegascan created.
"""
# Explicitly use a non-interactive Matplotlib backend.
plt.switch_backend('agg')
# Collect data
longest = max(durs)
long_start, long_end = t0 - longest, t0 + longest
cache = create_cache(ifo, long_start, long_end)
strain_name = app.conf['strain_channel_names'][ifo]
try:
ts = TimeSeries.read(cache, strain_name,
start=long_start, end=long_end).astype('float64')
# Do q_transforms for the different durations
qgrams = [ts.q_transform(
frange=(20, 4096), gps=t0, outseg=(t0 - dur, t0 + dur), logf=True)
for dur in durs]
except (IndexError, FloatingPointError, ValueError):
# data from cache can't be properly read, or data is weird
fig = plt.figure()
plt.axis("off")
plt.text(0.1, 0.45, f"Failed to create {ifo} omegascan", fontsize=17)
else:
fig = Plot(*qgrams,
figsize=(10 * len(durs), 5),
geometry=(1, len(durs)),
yscale='log',
method='pcolormesh')
for ax in fig.axes:
fig.colorbar(ax=ax, label='Normalized energy', clim=(0, 30))
ax.set_epoch(t0)
fig.suptitle(f'Omegascans of {strain_name} at {t0}', fontweight="bold")
outfile = io.BytesIO()
fig.savefig(outfile, format='png', dpi=300)
return outfile.getvalue()
def test_hdf5_read(self):
try:
hdfout = self.test_hdf5_write(delete=False)
except ImportError as e:
raise unittest.SkipTest(str(e))
else:
try:
ts = TimeSeries.read(hdfout, 'TEST CASE')
finally:
if os.path.isfile(hdfout):
os.remove(hdfout)
def set_from_csv(self, filename):
""" Set the strain data from a csv file
Parameters
==========
filename: str
The path to the file to read in
"""
from gwpy.timeseries import TimeSeries
timeseries = TimeSeries.read(filename, format='csv')
self.set_from_gwpy_timeseries(timeseries)
def generate_noise_from_file(cls,
file_name,
event_time,
block_time,
channel_names,
sample_frequency,
verbose=False):
"""Obtain data for either on source, off source, or injections.
This uses the gwpy `TimeSeriesDict.get` method
Parameters
----------
event_time : (`float)
trigger time of event to be processing
block_time : (`int`)
length of data to be processed
channel_names (`list`) :
required data channels.
sample_frequency (`int`):
sample rate of the data desired
verbose : `bool`, optional
print verbose output about NDS progress.
Returns:
`TimeSeriesDict` :
"""
#----- Start and stop time for this event.
start_time = event_time - block_time / 2
stop_time = event_time + block_time / 2
# Retrieve data and then resample and set epoch
data = {}
for det in channel_names:
data[det] = TimeSeries.read(file_name,
path='/noise/aLIGOZeroDetHighPower')
data = XTimeSeries(data)
for (idet, iseries) in data.items():
# set epoch of timeseries to the event_time
iseries.t0 = start_time
# set one of the detectors to be the reference detecotr
# for any future coherent combinations
return data
def get_spectrogram(start, end, axis='X', seis='EXV', **kwargs):
''' Get Spectrogram
Parameters
----------
start : `int`
start GPS time.
end : `int`
end GPS time.
Returns
-------
specgram : `gwpy.spectrogram.Spectrogram`
spectrogram.
'''
nproc = kwargs.pop('nproc', 3)
bandpass = kwargs.pop('bandpass', None)
fftlen = kwargs.pop('fftlen', 2**8)
diff = kwargs.pop('diff', False)
fs = kwargs.pop('fs', 256)
fname_hdf5 = fname_specgram(start, end, prefix=seis, axis=axis)
# Load specgram from hdf5 file
if os.path.exists(fname_hdf5):
specgram = Spectrogram.read(fname_hdf5, format='hdf5')
return specgram
# If no file, make specgram from timeseries data
try:
chname = get_seis_chname(start, end, axis=axis, seis=seis)[0]
fnamelist = existedfilelist(start, end)
data = TimeSeries.read(fnamelist, chname, nproc=nproc)
data = data.resample(fs)
data = data.crop(start, end)
except:
log.debug(traceback.format_exc())
raise ValueError('!!! {0} {1}'.format(start, end))
# calculate specgram
specgram = data.spectrogram2(fftlength=fftlen,
overlap=fftlen / 2,
nproc=nproc)
try:
fname_dir = '/'.join(fname_hdf5.split('/')[:4])
if not os.path.exists(fname_dir):
os.makedirs(fname_dir)
specgram.write(fname_hdf5, format='hdf5', overwrite=True)
log.debug('Make {0}'.format(fname_hdf5))
except:
log.debug(traceback.format_exc())
raise ValueError('!!!')
return specgram
def _read_data(channel, st, et, frames=False):
"""
get data, either from frames or from nds2
"""
ifo = channel.split(':')[0]
if frames:
# read from frames
connection = datafind.GWDataFindHTTPConnection()
print ifo[0]
if channel.split(':')[1] == 'GDS-CALIB_STRAIN':
cache = connection.find_frame_urls(ifo[0],ifo+'_HOFT_C00', st, et, urltype='file')
else:
cache = connection.find_frame_urls(ifo[0], ifo + '_C', st, et,urltype='file')
try:
data = TimeSeries.read(cache, channel, st, et)
except IndexError:
cache = connection.find_frame_urls(ifo[0], ifo+'_R', st, et, urltype='file')
data = TimeSeries.read(cache, channel, st, et)
else:
data = TimeSeries.fetch(channel, st, et)
return data
def get_primary_ts(channel, start, end, filepath=None,
frametype=None, cache=None, nproc=1):
"""Retrieve primary channel timeseries
by either reading a .gwf file or querying
"""
if filepath is not None:
LOGGER.info('Reading primary channel file')
return TimeSeries.read(filepath, channel=channel, start=start, end=end,
format='gwf', nproc=nproc)
else:
LOGGER.info('Querying primary channel')
return get_data(channel, start, end,
verbose='Reading primary:'.rjust(30),
frametype=frametype, source=cache, nproc=nproc)
def get_lsd(cache,
channel,
GPSstart,
duration,
stride,
overlap,
pltflg=0,
filename='',
yunit=''):
'''
This function calculates linear spectral density.
If pltflg==1, make plot.
Return: lsd, freq, mu(meanvalue)
'''
data = TimeSeries.read(cache,
channel,
GPSstart,
GPSstart + duration,
format='lalframe')
fs = 1. / data.dt.value # sampling frequency
mu = np.mean(data.value) # mean value of data
# Define parameters for FFT
st = stride # FFT stride in seconds
ov = st * overlap # overlap in seconds
nfft = int(st * fs)
freq, t, Sxx = signal.spectrogram(data.value - mu,
window=signal.hann(nfft),
nperseg=nfft,
fs=fs,
noverlap=int(ov * fs))
lspg = np.sqrt(Sxx)
lsd = np.mean(lspg, axis=1)
if pltflg == 1:
plt.figure()
plt.loglog(freq, lsd)
plt.grid(True)
plt.title(channel)
plt.xlim(freq[1:].min(), freq[1:].max())
plt.xlabel('Frequency [Hz]')
plt.ylabel('LSD [' + yunit + '/rtHz]')
plt.tight_layout()
fname = filename
plt.savefig(fname)
plt.close()
return lsd, freq, mu
def get_spectrogram(cache,
channel,
GPSstart,
duration,
stride,
overlap,
pltflg=0,
filename='',
rtnflg=0):
'''
This function calculated linear spectrogram.
If pltflg==1, makes plot.
If rtnflg==1, returns lspg, time, freq, mu
'''
data = TimeSeries.read(cache,
channel,
GPSstart,
GPSstart + duration,
format='lalframe')
fs = 1. / data.dt.value # sampling frequency
mu = np.mean(data.value) # mean value of data
# Define parameters for FFT
st = stride # FFT stride in seconds
ov = st * overlap # overlap in seconds
nfft = int(st * fs)
freq, t, Sxx = signal.spectrogram(data.value - mu,
window=signal.hann(nfft),
nperseg=nfft,
fs=fs,
noverlap=int(ov * fs))
lspg = np.sqrt(Sxx)
if pltflg == 1:
T, FREQ = np.meshgrid(t, freq)
fig2, ax = plt.subplots()
pc = ax.pcolor(T, FREQ, 10 * np.log10(lspg), cmap='rainbow')
cb = fig2.colorbar(pc)
fname = filename
plt.sacefig(fname)
plt.close()
if rtnflg == 1:
return lspg, t, freq, mu
def hoge(gps):
if np.isnan(gps):
return None
from gwpy.time import tconvert
#print tconvert(gps)
from gwpy.timeseries import TimeSeries
from glue.lal import Cache
channel = 'K1:PEM-EXV_SEIS_Z_SENSINF_OUT_DQ'
start = gps #- 5*60
end = gps + 30*60
gwf_cache = 'full_Sep01-Nov01.cache'
with open(gwf_cache, 'r') as fobj:
cache = Cache.fromfile(fobj)
#print cache
data = TimeSeries.read(cache,channel,start=start,end=end,verbose=True,nproc=2,pad=np.nan,format='gwf.lalframe')
plot = data.plot(
title = 'hoge'
#ylabel='Strain amplitude',
)
plot.savefig('{0}.png'.format(gps))
plot.close()
parser.add_option("--condor-cluster", type="float",help="Cluster ID")
parser.add_option("--proc", type="float", help="Job ID")
(opts, args) = parser.parse_args()
starttime = opts.starttime
endtime = opts.endtime
h0_max = opts.h0
wm = 'all/fg500'
#-------- Importing, filtering and timeshifting data ----------#
durationH = endtime - starttime
oldstarttime = starttime
oldendtime = endtime
Xspacing = 2.44140625E-4
pathtoinput = "/home/spxha/"
strainH = TimeSeries.read(pathtoinput+'S6framesH1.lcf',channel='H1:LDAS-STRAIN', start=starttime, end=endtime)
strainL = TimeSeries.read(pathtoinput+'S6framesL1.lcf',channel='L1:LDAS-STRAIN', start=starttime, end=endtime)
num_points = int(durationH/Xspacing)
h0_min = 0.0000001
h0_vals_num = 30
#----------------------------
# Applying a bandpass filter
#----------------------------
coefsL = get_filter_coefs('L1')
coefsH = get_filter_coefs('H1')
strainL = filter_data(strainL,coefsL)
strainH = filter_data(strainH,coefsH)
timeH = np.arange(starttime, endtime, Xspacing)
timeL = timeH
detMap = {'H1': lal.LALDetectorIndexLHODIFF, 'L1':
lal.LALDetectorIndexLLODIFF}
def validity_test(starttime, endtime, h0_max=0.001):
#------- Packages ---------#
print 'Importing packages'
import numpy as np
import astropy, gwpy, h5py, lal, sys, os
from astropy.coordinates import get_sun
import astropy.time as Time
from scipy.signal import butter, filtfilt
from gwpy.timeseries import TimeSeries
from antres import antenna_response as ant_res
from scipy.misc import logsumexp
from notchfilt import get_filter_coefs, filter_data
from optparse import OptionParser
#-------- Importing, filtering and timeshifting data ----------#
print 'Reading data'
durationH = endtime - starttime # same for durationL, but not used anyway
oldstarttime = starttime # for use later
oldendtime = endtime # for use later
Xspacing = 2.44140625E-4
gpsTime = np.linspace(starttime,endtime,int(1/Xspacing))
pathtoinput = "/home/spxha/"
strainH = TimeSeries.read(pathtoinput+'S6framesH1.lcf',channel='H1:LDAS-STRAIN', start=starttime, end=endtime)
strainL = TimeSeries.read(pathtoinput+'S6framesL1.lcf',channel='L1:LDAS-STRAIN', start=starttime, end=endtime)
num_points = int(durationH/Xspacing)
h0_min=0.00005
h0_vals_num=30
# Adding in a fake signal
# frequency in the middle of the range we're interested in 125 Hz
omega = 250.0*np.pi
amplitude = 0.5e-24 # (hopefully) middle of h0 values
# the signal to introduce is of the form amplitude*np.sin(omega*t)
# first get timeL and timeH in synch with the sun's position
print 'Getting the detectors in sync'
timeH = np.arange(starttime, endtime, Xspacing)
timeL = timeH
detMap = {'H1': lal.LALDetectorIndexLHODIFF, 'L1':
lal.LALDetectorIndexLLODIFF}
detH1 = lal.CachedDetectors[detMap['H1']]
detL1 = lal.CachedDetectors[detMap['L1']]
tgps = lal.LIGOTimeGPS(starttime, 0)
#---------- Get right ascension and declination of source in radians ----------#
numseg30 = int((endtime-starttime)/30.)
seg30 = starttime + 30*np.linspace(1,numseg30,numseg30) # 30 second update rate
tdelay = [[0] for _ in range(numseg30)]
tdelay = [[0] for _ in range(numseg30)]
for i in range(numseg30-1):
for j in range(int(len(timeL)*Xspacing)):
if ((timeL[j/Xspacing]>seg30[i])&(timeL[j/Xspacing]<seg30[i+1])):
coordstime=seg30[i]
coords = get_sun(Time.Time(coordstime,format='gps'))
tdelay[i] = lal.ArrivalTimeDiff(detH1.location, detL1.location, coords.ra.hour*np.pi/12, coords.dec.hour*np.pi/12, tgps)
coordstime = seg30[-1]
coords = get_sun(Time.Time(coordstime,format='gps'))
tdelay[-1] = lal.ArrivalTimeDiff(detH1.location, detL1.location, coords.ra.hour*np.pi/12, coords.dec.hour*np.pi/12, tgps)
tdelay = np.array(tdelay)
tdelay = np.repeat(tdelay,int(30/Xspacing))
# make sure tdelay and timeL are of same length in case integer-ing caused slight inconsistency.
b = np.ones(len(timeL)-len(tdelay))*tdelay[-1]
tdelay = np.append(tdelay,b)
timeL = timeL - tdelay
#------------ Down-sampling ------------#
print 'Down-sampling'
Xspacing = Xspacing*8
num_points = int(durationH/Xspacing)
newtimeL, newtimeH, newstrainH, newstrainL, newtdelay = [[0 for _ in range(num_points)] for _ in range(5)]
for i in range(num_points):
j = 8*i + 4
newstrainH[i] = np.mean(strainH[j-4:j+4])
newstrainL[i] = np.mean(strainL[j-4:j+4])
newtimeH[i] = timeH[j]
newtimeL[i] = timeL[j]
newtdelay[i] = tdelay[j]
newstrainH = newstrainH[76800:len(newstrainH)]
newstrainL = newstrainL[76800:len(newstrainL)]
newtimeH = newtimeH[76800:len(newtimeH)]
newtimeL = newtimeL[76800:len(newtimeL)]
newtdelay = newtdelay[76800:len(newtdelay)]
starttime = starttime + 150
durationH = int(newtimeH[-1]) - int(newtimeH[0])
num_points = int(durationH/Xspacing)
del timeL, timeH, tdelay, strainH, strainL
#----------- add in fake signal ------------#
newtimeH = newtimeH[0:num_points]
newtimeL = newtimeL[0:num_points]
newtdelay = newtdelay[0:num_points]
print 'Insert fake signal'
numseg = int((durationH)/600)
segs = np.linspace(0,numseg,numseg+1)*600
segs = segs + newtimeL[0]
psi1=np.pi/4
ra,dec,fp,fc = [[0 for _ in range(numseg+1)] for _ in range(4)]
for i in range(numseg+1):
coordstime = segs[i]
coords = get_sun(Time.Time(coordstime,format='gps'))
ra[i] = coords.ra.hour*np.pi/12
dec[i] = coords.dec.hour*np.pi/12
FcX0, FpX0, FcY0, FpY0 = [[0 for _ in range(num_points)] for _ in range(4)]
for i in range(num_points):
FpX0[i], FcX0[i] = ant_res(gpsTime[int(i*Xspacing/600.)], ra[int(i*Xspacing/600.)], dec[int(i*Xspacing/600.)], 0, 'H1')
FpY0[i], FcY0[i] = ant_res(gpsTime[int(i*Xspacing/600.)], ra[int(i*Xspacing/600.)], dec[int(i*Xspacing/600.)], 0, 'L1')
cos2pi1 = np.cos(2*psi1)
sin2pi1 = np.sin(2*psi1)
fakeH, fakeL, FpX, FcX, FpY, FcY = [[0 for _ in range(num_points)] for _ in range(6)]
for i in range(num_points):
FpX[i] = FpX0[i]*cos2pi1 + FcX0[i]*sin2pi1
FcX[i] = FcX0[i]*cos2pi1 - FpX0[i]*sin2pi1
FpY[i] = FpY0[i]*cos2pi1 + FcY0[i]*sin2pi1
FcY[i] = FcY0[i]*cos2pi1 - FpY0[i]*sin2pi1
for i in range(len(newtimeH)):
fakeH[i] = amplitude*(FpX[i]*np.sin(omega*newtimeH[i]) + FcX[i]*np.cos(omega*newtimeH[i]))
fakeL[i] = amplitude*(FpY[i]*np.sin(omega*newtimeL[i]) + FcY[i]*np.cos(omega*newtimeL[i]))
tdelayidx = [0 for _ in range(len(newtdelay))]
for i in range(len(newtdelay)):
tdelayidx[i] = int(newtdelay[i]*Xspacing)
idxmax= np.max(tdelayidx)
print len(newtdelay), len(newstrainL)
newstrainL0,newstrainH0 = [[0 for _ in range(len(newtdelay)-idxmax)] for _ in range(2)]
for i in range(idxmax,len(newtdelay)):
newstrainL0[i-idxmax]=newstrainL[i-tdelayidx[i]]
newstrainH0=newstrainH[0:len(newstrainL0)]
newstrainH0 = newstrainH0 + fakeH
newstrainL0 = newstrainL0 + fakeL
del newstrainL, newstrainH, fakeL, fakeH
# H1 and L1 are now in sync and filtered between 100 and 150 Hz.
del FcX,FcX0,FpX,FpX0,FcY,FcY0,FpY,FpY0
#----- Applying a bandpass filter -----#
print 'Filtering data'
coefsL = get_filter_coefs('L1')
coefsH = get_filter_coefs('H1')
newstrainL0 = np.array(newstrainL0)
newstrainH0 = np.array(newstrainH0)
newstrainL = filter_data(newstrainL0,coefsL)
newstrainH = filter_data(newstrainH0,coefsH)
del coefsL, coefsH
############################################################
#------------ Finding probability distribution ------------#
# ------------ Defining some stuff for p ------------- #
print 'Finding likelihood Part 1/2'
psi_array = np.linspace(0,np.pi,10)
dpsi = psi_array[1]-psi_array[0]
sigmaA = 10.0
h0min = h0_min*np.std(newstrainH)
h0max = h0_max*np.std(newstrainH)
h0_array = np.linspace(h0min,h0max,h0_vals_num)
invSigma0 = np.array([[(1./sigmaA**2), 0.], [0., (1./sigmaA**2)]])
detSigma0 = sigmaA**4
dX = newstrainH
dY = newstrainL
del newstrainH, newstrainL, newstrainH0, newstrainL0, newtimeL, newtimeH
FcX0, FpX0, FcY0, FpY0 = [[0 for _ in range(num_points)] for _ in range(4)]
for i in range(num_points):
FpX0[i], FcX0[i] = ant_res(gpsTime[int(i*Xspacing/600.)], ra[int(i*Xspacing/600.)], dec[int(i*Xspacing/600.)], 0, 'H1')
FpY0[i], FcY0[i] = ant_res(gpsTime[int(i*Xspacing/600.)], ra[int(i*Xspacing/600.)], dec[int(i*Xspacing/600.)], 0, 'L1')
p = [0 for _ in range(len(h0_array))]
ppsi = [0 for _ in range(len(psi_array))]
logdpsi_2 = np.log(0.5*dpsi)
cos2pi, sin2pi = [[0 for _ in range(len(psi_array))] for _ in range(2)]
FpX, FcX, FpY, FcY = [[[0 for _ in range(num_points)] for _ in range(len(psi_array))] for _ in range(4)]
for k in range(len(psi_array)):
cos2pi[k] = np.cos(2*psi_array[k])
sin2pi[k] = np.sin(2*psi_array[k])
for i in range(num_points):
FpX[k][i] = FpX0[i]*cos2pi[k] + FcX0[i]*sin2pi[k]
FcX[k][i] = FcX0[i]*cos2pi[k] - FpX0[i]*sin2pi[k]
FpY[k][i] = FpY0[i]*cos2pi[k] + FcY0[i]*sin2pi[k]
FcY[k][i] = FcY0[i]*cos2pi[k] - FpY0[i]*sin2pi[k]
print 'Finding likelihoot Part 2/2. This will take a while... '
for i in range(num_points):
d = np.array([dX[i], dY[i]])
d.shape = (2,1)
if (i + int(60/Xspacing)<num_points):
int1 = i + int(60/Xspacing)
else:
int1 = i
if (i - int(60/Xspacing)>0):
int0 = i - int(60/Xspacing)
else:
int0 = 0
sigmaX = np.std(dX[int0:int1])
sigmaY = np.std(dY[int0:int1])
C = np.array([[sigmaX**2, 0.], [0., sigmaY**2]])
invC = np.array([[(1./sigmaX**2), 0.], [0., (1/sigmaY**2)]])
detC = sigmaX**2 * sigmaY**2
for j in range(len(h0_array)):
for k in range(len(psi_array)):
M = h0_array[j]*np.array([[FpX[k][i], FpY[k][i]], [FcX[k][i], FcY[k][i]]])
M = np.array([[M[0][0][0],M[0][1][0]],[M[1][0][0], M[1][1][0]]])
invSigma = np.dot(M.T, np.dot(invC, M)) + invSigma0
Sigma = np.linalg.inv(invSigma)
detSigma = np.linalg.det(Sigma)
chi = np.dot(Sigma, np.dot(M.T, np.dot(invC, d)))
ppsi[k] = 0.5*np.log(detSigma) - 0.5*np.log(16.*np.pi**4*detSigma0*detC) - 0.5*(np.vdot(d.T, np.dot(invC, d)) + np.vdot(chi.T, np.dot(invSigma, chi)))
p[j] += logdpsi_2 + logsumexp([logsumexp(ppsi[:-1]), logsumexp(ppsi[1:])])
# Write into a file.
wm = 'all/siginj'
if os.path.exists(wm)==False:
os.mkdir(wm)
else:
pass
np.savetxt(wm+'/p'+str(oldstarttime)+'.txt',p)
np.savetxt(wm+'/h0'+str(oldstarttime)+'.txt',h0_array)
def getTimeSeries(self, arg_list):
"""Verify and interpret arguments to get all
TimeSeries objects defined"""
# retrieve channel data from NDS as a TimeSeries
for chans in arg_list.chan:
for chan in chans:
if chan not in self.chan_list:
self.chan_list.append(chan)
if len(self.chan_list) < self.min_timeseries:
raise ArgumentError('A minimum of %d channels must be ' +
'specified for this product' %
self.min_timeseries)
if len(arg_list.start) > 0:
for start_arg in arg_list.start:
if type(start_arg) is list:
for starts in start_arg:
if isinstance(starts, basestring):
starti = int(starts)
elif starts is list:
for start_str in starts:
starti = int(start_str)
# ignore duplicates (to make it easy for ldvw)
if starti not in self.start_list:
self.start_list.append(starti)
else:
self.start_list.append(int(start_arg))
else:
raise ArgumentError('No start times specified')
# Verify the number of datasets specified is valid for this plot
self.n_datasets = len(self.chan_list) * len(self.start_list)
if self.n_datasets < self.get_min_datasets():
raise ArgumentError('%d datasets are required for this ' +
'plot but only %d are supplied' %
(self.get_min_datasets(), self.n_datasets))
if self.n_datasets > self.get_max_datasets():
raise ArgumentError('A maximum of %d datasets allowed for ' +
'this plot but %d specified' %
(self.get_max_datasets(), self.n_datasets))
if arg_list.duration:
self.dur = int(arg_list.duration)
else:
self.dur = 10
verb = self.verbose > 1
# determine how we're supposed get our data
source = 'NDS2'
frame_cache = False
if arg_list.framecache:
source = 'frames'
frame_cache = arg_list.framecache
# set up filter parameters for all channels
highpass = 0
if arg_list.highpass:
highpass = float(arg_list.highpass)
self.filter += "highpass(%.1f) " % highpass
# Get the data from NDS or Frames
# time_groups is a list of timeseries index grouped by
# start time for coherence like plots
self.time_groups = []
for start in self.start_list:
time_group = []
for chan in self.chan_list:
if verb:
print 'Fetching %s %d, %d using %s' % \
(chan, start, self.dur, source)
if frame_cache:
data = TimeSeries.read(frame_cache, chan, start=start,
end=start+self.dur)
else:
data = TimeSeries.fetch(chan, start, start+self.dur,
verbose=verb)
if highpass > 0:
data = data.highpass(highpass)
self.timeseries.append(data)
time_group.append(len(self.timeseries)-1)
self.time_groups.append(time_group)
# report what we have if they asked for it
self.log(3, ('Channels: %s' % self.chan_list))
self.log(3, ('Start times: %s, duration' % self.start_list, self.dur))
self.log(3, ('Number of time series: %d' % len(self.timeseries)))
if len(self.timeseries) != self.n_datasets:
self.log(0, ('%d datasets requested but only %d transfered' %
(self.n_datasets, len(self.timeseries))))
if len(self.timeseries) > self.get_min_datasets():
self.log(0, 'Proceeding with the data that was transferred.')
else:
self.log(0, 'Not enough data for requested plot.')
from sys import exit
exit(2)
return
__author__ = "Alex Urban <*****@*****.**>"
__currentmodule__ = 'gwpy.timeseries'
# First, we prepare one second of Gaussian noise:
from numpy import random
from gwpy.timeseries import TimeSeries
noise = TimeSeries(random.normal(scale=.1, size=16384), sample_rate=16384)
# Then we can download a simulation of the GW150914 signal from GWOSC:
from astropy.utils.data import get_readable_fileobj
url = ("https://www.gw-openscience.org/s/events/GW150914/P150914/"
"fig2-unfiltered-waveform-H.txt")
with get_readable_fileobj(url) as f:
signal = TimeSeries.read(f, format='txt')
signal.t0 = .5 # make sure this intersects with noise time samples
# Note, since this simulation cuts off before a certain time, it is
# important to taper its ends to zero to avoid ringing artifacts.
# We can accomplish this using the
# :meth:`~gwpy.timeseries.TimeSeries.taper` method.
signal = signal.taper()
# Since the time samples overlap, we can inject this into our noise data
# using :meth:`~gwpy.types.series.Series.inject`:
data = noise.inject(signal)
# Finally, we can visualize the full process in the time domain:
ifo = str(sys.argv[5])
frames = ifo + '1_M'
channel_list = str(sys.argv[3])
out_file = str(sys.argv[4])
fP = open(out_file,'w')
chan_list = []
chan_read = open(channel_list)
for line in chan_read.readlines():
chan_list.append(line)
connection = datafind.GWDataFindHTTPConnection()
cache = connection.find_frame_urls(ifo, frames, start_gps, end_gps, urltype='file')
for chan in chan_list:
chan1 = chan[:-1]
data1=TimeSeries.read(cache, chan1, start=start_gps, end=end_gps)
if any(diff(data1.value)>0):
print >> fP, chan1
fP.close()
def generate_triggers(channel,gps_start,gps_end,ifo,frames,outdir,segments,padding):
# generate frame cache and connection
pad_gps_end = gps_end - padding
print "Processing segment: " + str(gps_start) + " - " + str(pad_gps_end)
connection = datafind.GWDataFindHTTPConnection()
cache = connection.find_frame_urls(ifo, frames, int(gps_start), int(gps_end), urltype='file')
data=TimeSeries.read(cache, channel, start=int(gps_start), end=int(pad_gps_end))
time_vec=data.times.value
'''
We are interested in times when the channels switch from a normal state to an overflowing
state or vice versa. We're not checking the first and last data point of each set because it's not
possible to tell whether or not a channel has just started overflowing at our first data
point or if it had been overflowing beforehand.
This big loop will test every data point (that isn't an endpoint) and record it in the
trigger vector if it's an overflow transition.
'''
# trig_segs = seg.segmentlist()
#
# for j in np.arange(np.size(data,0)):
# if (0 < j < (np.size(data,0) - 1)):
# if cumu_seg_test(data[j-1],data[j],data[j+1]):
# trig_segs |= seg.segmentlist([seg.segment(time_vec[j+1],time_vec[j+1]+1)])
#
# trig_segs = trig_segs.coalesce()
trigger_vec = []
for j in np.arange(np.size(data,0)):
if (0 < j < (np.size(data,0) - 1)):
if cumu_seg_test(data[j-1],data[j],data[j+1]):
trigger_vec.append(time_vec[j+1])
if (np.size(trigger_vec) == 0):
print "No triggers found for " + str(channel)
return
else:
print "Found triggers for " + str(channel)
# map triggers into float type and then convert them all into LIGOTimeGPS notation
trig_times = map(LIGOTimeGPS,map(float,trigger_vec))
# create mocked up frequency and SNR vectors to fill in XML tables
freqs = np.empty(np.size(trigger_vec))
freqs.fill(100)
snrs = np.empty(np.size(trigger_vec))
snrs.fill(10)
sngl_burst_table_up = lsctables.New(lsctables.SnglBurstTable, ["peak_time", "peak_time_ns","peak_frequency","snr"])
for t,f,s in zip(trig_times, freqs, snrs):
row = sngl_burst_table_up.RowType()
row.set_peak(t)
row.peak_frequency = f
row.snr = s
sngl_burst_table_up.append(row)
xmldoc_up = ligolw.Document()
xmldoc_up.appendChild(ligolw.LIGO_LW())
xmldoc_up.childNodes[0].appendChild(sngl_burst_table_up)
directory_up = (outdir + '/' + channel[:2] + "/" +
channel[3:] + "/" + str(gps_start)[:5] + "/")
if not os.path.exists(directory_up):
os.makedirs(directory_up)
utils.write_filename(xmldoc_up, directory_up + channel[:2] + "-" + channel[3:6] +
"_" + channel[7:] + "_ADC-" + str(gps_start) + "-" + str(gps_end - gps_start) +
".xml.gz", gz=True)
def setUp(self):
self.ts = TimeSeries.read(TEST_HDF_FILE, 'H1:LDAS-STRAIN')
self.asd = self.ts.asd(1)
self.mmm = [self.asd, self.asd*0.9, self.asd*1.1]
def getTimeSeries(self, arg_list):
"""Verify and interpret arguments to get all
TimeSeries objects defined"""
# retrieve channel data from NDS as a TimeSeries
for chans in arg_list.chan:
for chan in chans:
if chan not in self.chan_list:
self.chan_list.append(chan)
if len(self.chan_list) < self.min_timeseries:
raise ArgumentError("A minimum of %d channels must be specified for this product" % self.min_timeseries)
if len(arg_list.start) > 0:
self.start_list = list(set(map(int, arg_list.start)))
else:
raise ArgumentError("No start times specified")
# Verify the number of datasets specified is valid for this plot
self.n_datasets = len(self.chan_list) * len(self.start_list)
if self.n_datasets < self.get_min_datasets():
raise ArgumentError(
"%d datasets are required for this plot but only %d are "
"supplied" % (self.get_min_datasets(), self.n_datasets)
)
if self.n_datasets > self.get_max_datasets():
raise ArgumentError(
"A maximum of %d datasets allowed for this plot but %d "
"specified" % (self.get_max_datasets(), self.n_datasets)
)
if arg_list.duration:
self.dur = int(arg_list.duration)
else:
self.dur = 10
verb = self.verbose > 1
# determine how we're supposed get our data
source = "NDS2"
frame_cache = False
if arg_list.framecache:
source = "frames"
frame_cache = arg_list.framecache
# set up filter parameters for all channels
highpass = 0
if arg_list.highpass:
highpass = float(arg_list.highpass)
self.filter += "highpass(%.1f) " % highpass
# Get the data from NDS or Frames
# time_groups is a list of timeseries index grouped by
# start time for coherence like plots
self.time_groups = []
for start in self.start_list:
time_group = []
for chan in self.chan_list:
if verb:
print "Fetching %s %d, %d using %s" % (chan, start, self.dur, source)
if frame_cache:
data = TimeSeries.read(frame_cache, chan, start=start, end=start + self.dur)
else:
data = TimeSeries.fetch(chan, start, start + self.dur, verbose=verb)
if highpass > 0:
data = data.highpass(highpass)
self.timeseries.append(data)
time_group.append(len(self.timeseries) - 1)
self.time_groups.append(time_group)
# report what we have if they asked for it
self.log(3, ("Channels: %s" % self.chan_list))
self.log(3, ("Start times: %s, duration" % self.start_list, self.dur))
self.log(3, ("Number of time series: %d" % len(self.timeseries)))
if len(self.timeseries) != self.n_datasets:
self.log(0, ("%d datasets requested but only %d transfered" % (self.n_datasets, len(self.timeseries))))
if len(self.timeseries) > self.get_min_datasets():
self.log(0, "Proceeding with the data that was transferred.")
else:
self.log(0, "Not enough data for requested plot.")
sys.exit(2)
return
a, b = polyfit(data[:, 0], data[:, 1], 1)
print "%.1f %u" % (a, b)
# Slide through the data fitting PSL to IMC for data around each sample
coeffs = []
for idx in xrange(maxidx):
idx1 = max(0, idx - width)
idx2 = min(idx + width, maxidx)
coeffs.append(polyfit(data[idx1:idx2, 0], data[idx1:idx2, 1], 1,
w=weights[idx1 - idx + width:idx2 - idx + width]))
coeffs = array(coeffs)
times = arange(len(coeffs)) + 0.5
connection = datafind.GWDataFindHTTPConnection()
cache = connection.find_frame_urls(
ifo[0], '%s_R' % ifo, st, et, urltype='file')
imc = TimeSeries.read(cache, "%s:IMC-F_OUT_DQ" % ifo, st, et)
imc = imc[::16384 / 256]
print imc
samp_times = arange(len(imc)) / 256.
coeffs0 = interp(samp_times, times, coeffs[:, 0])
coeffs1 = interp(samp_times, times, coeffs[:, 1]) - 7.6e7
vco_interp = coeffs0 * imc.data + coeffs1
chan = "%s:IMC-VCO_PREDICTION" % (ifo,)
vco_data = TimeSeries(vco_interp, epoch=st, sample_rate=imc.sample_rate.value,
name=chan, channel=chan)
vco_data.write("%s-vcoprediction-%u-%u.hdf" % (ifo, st, dur), format='hdf')
def setUp(self):
# read data
self.data = TimeSeries.read(self.framefile, 'L1:LDAS-STRAIN')
# calculate PSD
self.psd = self.data.psd(0.4, 0.2, window=('kaiser', 24))
# plotting all the data
from gwpy.timeseries import TimeSeries
import matplotlib.pyplot as plt
import numpy as np
import gwpy
import glue
data = np.loadtxt('/home/spxha/solarGW/intersect6.txt',dtype='f8')
TimesStart = data[:,0]
TimesEnd = data[:,1]
Xspacing = 2.44140625E-4
for i in range(len(TimesStart)):
print i
duration = TimesEnd[i]-TimesStart[i]
timeseriesi = np.linspace(TimesStart[i], TimesEnd[i], int(duration/Xspacing))
straini = TimeSeries.read('/home/spxha/S6framesH1.lcf',channel='H1:PSL-ODC_CHANNEL_OUT_DQ',start=TimesStart[i], end=TimesEnd[i], format='lcf')
if i==0:
strain = straini
timeseries = timeseriesi
else:
strain = np.append(strain, straini)
timeseries = np.append(timeseries, timeseriesi)
del duration, timeseriesi, straini
plt.figure()
plt.plot(timeseries,strain)
plt.savefig('/home/spxha/Timeseries.png')
vco_data = TimeSeries(vco_interp, epoch=st,
sample_rate=imc.sample_rate.value,
name=chan, channel=chan)
vco_data.write("%s-vcoprediction-%u-%u.hdf" % (ifo, st, dur), format='hdf')
if __name__ == '__main__':
ifo = sys.argv[1]
st = int(sys.argv[2])
dur = int(sys.argv[3])
et = st + dur
connection = datafind.GWDataFindHTTPConnection()
cache = connection.find_frame_urls(
ifo[0], '%s_R' % ifo, st, et, urltype='file')
print "Get IMC"
imc = TimeSeries.read(cache, chan2_pat % ifo, st, et)
print "Get psl"
pslvco = TimeSeries.read(cache, chan1_pat % ifo, st, et + 1)
print "Downsample psl"
pslvco = pslvco[16 + 8::16]
print "Downsample imc"
imc_srate = int(imc.sample_rate.value)
imc = imc[imc_srate / 2::imc_srate]
print "Saving"
data = numpy.array((imc.data, pslvco.data)).T
fname = "%s-imc-vco-%u-%u.npy" % (ifo, st, dur)
numpy.save("%s-imc-vco-%u-%u.npy" % (ifo, st, dur), data)
dump_calibrated_data(fname)
def setUp(self):
self.ts = TimeSeries.read(TEST_HDF_FILE, 'H1:LDAS-STRAIN')
self.sg = self.ts.spectrogram2(0.5, 0.49)
self.mmm = [self.ts, self.ts * 0.9, self.ts*1.1]
def read_data_archive(sourcefile):
"""Read archived data from an HDF5 archive source.
Parameters
----------
sourcefile : `str`
path to source HDF5 file
"""
from h5py import File
with File(sourcefile, 'r') as h5file:
# read all time-series data
try:
group = h5file['timeseries']
except KeyError:
group = dict()
for dataset in group.itervalues():
ts = TimeSeries.read(dataset, format='hdf')
if (re.search('\.(rms|min|mean|max|n)\Z', ts.channel.name) and
ts.sample_rate.value == 1.0):
ts.channel.type = 's-trend'
elif re.search('\.(rms|min|mean|max|n)\Z', ts.channel.name):
ts.channel.type = 'm-trend'
ts.channel = get_channel(ts.channel)
try:
add_timeseries(ts, key=ts.channel.ndsname)
except ValueError:
if mode.get_mode() == mode.SUMMARY_MODE_DAY:
raise
warnings.warn('Caught ValueError in combining daily archives')
# get end time
globalv.DATA[ts.channel.ndsname].pop(-1)
t = globalv.DATA[ts.channel.ndsname][-1].span[-1]
add_timeseries(ts.crop(start=t), key=ts.channel.ndsname)
# read all state-vector data
try:
group = h5file['statevector']
except KeyError:
group = dict()
for dataset in group.itervalues():
sv = StateVector.read(dataset, format='hdf')
sv.channel = get_channel(sv.channel)
add_timeseries(sv, key=sv.channel.ndsname)
# read all spectrogram data
try:
group = h5file['spectrogram']
except KeyError:
group = dict()
for key, dataset in group.iteritems():
key = key.rsplit(',', 1)[0]
spec = Spectrogram.read(dataset, format='hdf')
spec.channel = get_channel(spec.channel)
add_spectrogram(spec, key=key)
try:
group = h5file['segments']
except KeyError:
group = dict()
for name, dataset in group.iteritems():
dqflag = DataQualityFlag.read(dataset, format='hdf')
globalv.SEGMENTS += {name: dqflag}
def setUp(self):
self.ts = TimeSeries.read(TEST_HDF_FILE, 'H1:LDAS-STRAIN')
# for now let's just assume you're not looking at a lock
# longer than a day...
for i in range(int(86400 / t)):
new_times = []
new_freqs = []
for time, snr, freq in zip(times, snrs, freqs):
if time > st and time < st + t:
new_times.append(time)
new_freqs.append(freq)
if len(new_times) == 0:
st += t
continue
connection = datafind.GWDataFindHTTPConnection()
cache = connection.find_frame_urls(
'L', 'L1_C', st, st + t, urltype='file')
data = TimeSeries.read(cache, channel, st, st + t)
data2 = detrend(data)
data = TimeSeries(
data2, dx=data.dx, sample_rate=data.sample_rate, x0=data.x0)
specgram = data.spectrogram2(fftlength=.1, overlap=0.1 * 0.9)
specgram = specgram.ratio('median')
plot = specgram.plot(vmin=1, vmax=10, norm='log')
plot.add_colorbar(label='amplitude relative to median')
ax = plot.gca()
ax.set_ylim(40, 7e4)
ax.set_yscale('log')
# ax.scatter(new_times,new_freqs,'x',color='r')
for time, freq in zip(new_times, new_freqs):
ax.scatter(time, freq, marker='x', color='r', s=160)
ax.set_title('expect %d triggers' % (len(new_times)))
plotfile = '%s/%s/%s/%d/%d' % (dir2, extra_dir,
if (x == y != z) and (z != 0):
return True
else:
return False
# check if an overflow channel is cumulative by crosschecking ndcuid_list and model_list
# model list lines are recorded as <model_name.mdl> <cumulative status> <ndcuid=num>
def checkCumulative(chan_name,model_list,ndcuid_list):
ID = 'ndcuid=' + str(chan_name)[str(chan_name).find('-')+1:str(chan_name).find('_')]
if (model_list[ndcuid_list.index(ID)][1] == 'cumulative'):
return True
else:
return False
data=TimeSeries.read(cache, channel, start=gps_start, end=gps_end)
time_vec = linspace(gps_start,gps_end,(gps_end - gps_start)*16,endpoint=False)
'''
We are interested in times when the channels switch from a normal state to an overflowing
state or vice versa. We're not checking the first and last data point of each set because it's not
possible to tell whether or not a channel has just started overflowing at our first data
point or if it had been overflowing beforehand.
This big loop will test every data point (that isn't an endpoint) and record it in the
trigger vector if it's an overflow transition.
'''
def read_data_archive(sourcefile):
"""Read archived data from an HDF5 archive source
This method reads all found data into the data containers defined by
the `gwsumm.globalv` module, then returns nothing.
Parameters
----------
sourcefile : `str`
path to source HDF5 file
"""
from h5py import File
with File(sourcefile, 'r') as h5file:
# -- channels ---------------------------
try:
ctable = Table.read(h5file['channels'])
except KeyError: # no channels table written
pass
else:
for row in ctable:
chan = get_channel(row['name'])
for p in ctable.colnames[1:]:
if row[p]:
setattr(chan, p, row[p])
# -- timeseries -------------------------
for dataset in h5file.get('timeseries', {}).values():
ts = TimeSeries.read(dataset, format='hdf5')
if (re.search(r'\.(rms|min|mean|max|n)\Z', ts.channel.name) and
ts.sample_rate.value == 1.0):
ts.channel.type = 's-trend'
elif re.search(r'\.(rms|min|mean|max|n)\Z', ts.channel.name):
ts.channel.type = 'm-trend'
ts.channel = get_channel(ts.channel)
try:
add_timeseries(ts, key=ts.channel.ndsname)
except ValueError:
if mode.get_mode() != mode.Mode.day:
raise
warnings.warn('Caught ValueError in combining daily archives')
# get end time
globalv.DATA[ts.channel.ndsname].pop(-1)
t = globalv.DATA[ts.channel.ndsname][-1].span[-1]
add_timeseries(ts.crop(start=t), key=ts.channel.ndsname)
# -- statevector -- ---------------------
for dataset in h5file.get('statevector', {}).values():
sv = StateVector.read(dataset, format='hdf5')
sv.channel = get_channel(sv.channel)
add_timeseries(sv, key=sv.channel.ndsname)
# -- spectrogram ------------------------
for tag, add_ in zip(
['spectrogram', 'coherence-components'],
[add_spectrogram, add_coherence_component_spectrogram]):
for key, dataset in h5file.get(tag, {}).items():
key = key.rsplit(',', 1)[0]
spec = Spectrogram.read(dataset, format='hdf5')
spec.channel = get_channel(spec.channel)
add_(spec, key=key)
# -- segments ---------------------------
for name, dataset in h5file.get('segments', {}).items():
dqflag = DataQualityFlag.read(h5file, path=dataset.name,
format='hdf5')
globalv.SEGMENTS += {name: dqflag}
# -- triggers ---------------------------
for dataset in h5file.get('triggers', {}).values():
load_table(dataset)