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+import numpy as np
+import bilby
+import matplotlib.pyplot as plt
+from gwpy.timeseries import TimeSeries
+
+
+
+outdir = 'outdir'
+label = 'bbh_test_onewaveform'
+
+sampling_frequency = 16384.
+dt = 1.0/sampling_frequency
+
+
+
+#Load data.
+data = np.loadtxt('./mdc-master/injection-h_m1_L0.9_l2m2_r300.dat')
+N = len(data)
+duration = N*dt
+time = np.arange(0,duration,dt)
+
+
+
+#The strain data Daniel gave me only include one column. This is to add time column to data.
+f = open('injection-h_m1_L0.9_l2m2_r300.txt','w')
+for i in range(0,N):
+    f.write("%.20e %.20e\n" % (time[i],data[i]))            
+f.close()
+plt.plot(time,data)
+
+#Translate "txt" file to "gwf" file, because BILBY only reads "gwf" file.
+#Read new data which has 2 columns as a timeseries.
+gwffile = TimeSeries.read('injection-h_m1_L0.9_l2m2_r300.txt')
+gwffile.t0 = .0
+
+#Give channel a name.
+gwffile.name='H1:GWOSC-4KHZ_R1_STRAIN'
+
+gwffile.write('injection-h_m1_L0.9_l2m2_r300.gwf')
+
+#This is to check if "gwf" file is succeed to produce.
+#data_2=TimeSeries.read('injection-h_m1_L0.9_l2m2_r300.gwf','H1:GWOSC-4KHZ_R1_STRAIN')
+
+
+
+# inject the signal into H1 interferometer.
+#ifos = bilby.gw.detector.get_empty_interferometer('H1')
+ifos = bilby.gw.detector.InterferometerList(['H1'])
+
+ifos[0].set_strain_data_from_frame_file(frame_file='injection-h_m1_L0.9_l2m2_r300.gwf',
+                                        sampling_frequency=sampling_frequency, duration=duration, 
+                                        start_time=.0,channel='H1:GWOSC-4KHZ_R1_STRAIN')
+#ifos[0].set_strain_data_from_power_spectral_densities(sampling_frequency=sampling_frequency, duration=duration,    start_time=-0.5)
+print(ifos[0])
+#Usually for 1 event, we have strain data from 2 or more interferometers, so the following code is needed:
+#for i in range(len(ifos)):
+#    ifos[i].set_strain_data_from_frame_file(frame_file='new_injection-h_m16_L0.18_l2m2_r300.gwf',sampling_frequency=sampling_frequency, duration=duration, start_time=.0,channel='')
+#    ifos[i].strain_data_from_gwpy_time_series('injection-h_m16_L0.18_l2m2_r300.gwf')
+#    ifos[i].set_strain_data_from_power_spectral_densities(
+#    sampling_frequency=sampling_frequency, duration=duration,
+#    start_time=-0.5)
+
+
+
+# Generate waveform
+waveform_arguments = dict(waveform_approximant='IMRPhenomPv2',
+                          reference_frequency=50., minimum_frequency=10.)
+
+waveform_generator = bilby.gw.WaveformGenerator(
+    duration=duration, sampling_frequency=sampling_frequency,
+    frequency_domain_source_model=bilby.gw.source.lal_binary_black_hole,
+    waveform_arguments=waveform_arguments)
+
+
+
+#Use customized BBH priors.
+priors = bilby.core.prior.PriorDict(filename='bilby_gw_prior_files_binary_black_holes.prior')
+priors['geocent_time'] = bilby.prior.Uniform(
+    minimum=.0-0.1,
+    maximum=.0+0.1,
+    name='geocent_time', latex_label='$t_c$', unit='$s$')
+
+
+#likelihood
+likelihood = bilby.gw.GravitationalWaveTransient(
+    interferometers=ifos, waveform_generator=waveform_generator, priors=priors,
+    distance_marginalization=True, phase_marginalization=True, time_marginalization=True)
+    
+
+result = bilby.run_sampler(
+    likelihood=likelihood, priors=priors, sampler='dynesty', npoints=1000,
+    injection_parameters=None, outdir=outdir, label=label)
+
+# Make a corner plot.
+result.plot_corner()
+
+
+
+
+