def test_to_flag():
uvf = UVFlag(test_f_file)
uvf.to_flag()
nt.assert_true(hasattr(uvf, 'flag_array'))
nt.assert_false(hasattr(uvf, 'metric_array'))
nt.assert_true(uvf.mode == 'flag')
nt.assert_true('Converted to mode "flag"' in uvf.history)
def test_to_waterfall_bl_flags_or():
uvf = UVFlag(test_f_file)
uvf.to_flag()
uvf.weights_array = np.ones_like(uvf.weights_array)
uvf.to_waterfall(method='or')
nt.assert_true(uvf.type == 'waterfall')
nt.assert_true(uvf.mode == 'flag')
nt.assert_true(uvf.flag_array.shape == (len(uvf.time_array),
len(uvf.freq_array),
len(uvf.polarization_array)))
nt.assert_true(
np.array_equal(uvf.weights_array, np.ones_like(uvf.flag_array,
np.float)))
uvf = UVFlag(test_f_file)
uvf.to_flag()
uvf.weights_array = np.ones_like(uvf.weights_array)
uvf.weights_array[0, 0, 0, 0] = 0.2
uvtest.checkWarnings(uvf.to_waterfall, [], {'method': 'or'},
nwarnings=1,
message='Currently weights are')
nt.assert_true(uvf.type == 'waterfall')
nt.assert_true(uvf.mode == 'flag')
nt.assert_true(uvf.flag_array.shape == (len(uvf.time_array),
len(uvf.freq_array),
len(uvf.polarization_array)))
nt.assert_true(
np.array_equal(uvf.weights_array, np.ones_like(uvf.flag_array,
np.float)))
def test_uvflag(self):
uvf = UVFlag(test_f_file)
uvf.to_flag()
xant = uvf.ant_1_array[0]
xrfi.flag_xants(uvf, xant)
nt.assert_true(np.all(uvf.flag_array[uvf.ant_1_array == xant, :, :, :]))
nt.assert_true(np.all(uvf.flag_array[uvf.ant_2_array == xant, :, :, :]))
def test_or_add_history():
uvf = UVFlag(test_f_file)
uvf.to_flag()
uvf2 = uvf.copy()
uvf2.history = 'Different history'
uvf3 = uvf | uvf2
nt.assert_true(uvf.history in uvf3.history)
nt.assert_true(uvf2.history in uvf3.history)
nt.assert_true("Flags OR'd with:" in uvf3.history)
def test_to_waterfall_bl_flags():
uvf = UVFlag(test_f_file)
uvf.to_flag()
uvf.weights_array = np.ones_like(uvf.weights_array)
uvf.to_waterfall()
nt.assert_true(uvf.type == 'waterfall')
nt.assert_true(uvf.mode == 'metric')
nt.assert_true(uvf.metric_array.shape == (len(uvf.time_array),
len(uvf.freq_array),
len(uvf.polarization_array)))
nt.assert_true(uvf.weights_array.shape == uvf.metric_array.shape)
def test_ior():
uvf = UVFlag(test_f_file)
uvf.to_flag()
uvf2 = uvf.copy()
uvf2.flag_array = np.ones_like(uvf2.flag_array)
uvf.flag_array[0] = True
uvf2.flag_array[0] = False
uvf2.flag_array[1] = False
uvf |= uvf2
nt.assert_true(np.all(uvf.flag_array[0]))
nt.assert_false(np.any(uvf.flag_array[1]))
nt.assert_true(np.all(uvf.flag_array[2:]))
def test_to_antenna_flags():
uvc = UVCal()
uvc.read_calfits(test_c_file)
uvf = UVFlag(uvc)
uvf.to_waterfall()
uvf.to_flag()
uvf.flag_array[0, 10, 0] = True # Flag time0, chan10
uvf.flag_array[1, 15, 0] = True # Flag time1, chan15
uvf.to_antenna(uvc)
nt.assert_true(np.all(uvf.ant_array == uvc.ant_array))
nt.assert_true(np.all(uvf.time_array == uvc.time_array))
nt.assert_true(np.all(uvf.flag_array[:, 0, 10, 0, 0]))
nt.assert_true(np.all(uvf.flag_array[:, 0, 15, 1, 0]))
nt.assert_true(uvf.flag_array.mean() == 2. * uvc.Nants_data /
uvf.flag_array.size)
def test_to_antenna_force_pol():
uvc = UVCal()
uvc.read_calfits(test_c_file)
uvc.select(jones=-5)
uvf = UVFlag(uvc)
uvf.to_waterfall()
uvf.to_flag()
uvf.flag_array[0, 10, 0] = True # Flag time0, chan10
uvf.flag_array[1, 15, 0] = True # Flag time1, chan15
uvf.polarization_array[0] = -4 # Change pol, but force pol anyway
uvf.to_antenna(uvc, force_pol=True)
nt.assert_true(np.all(uvf.ant_array == uvc.ant_array))
nt.assert_true(np.all(uvf.time_array == uvc.time_array))
nt.assert_true(np.array_equal(uvf.polarization_array, uvc.jones_array))
nt.assert_true(np.all(uvf.flag_array[:, 0, 10, 0, 0]))
nt.assert_true(np.all(uvf.flag_array[:, 0, 15, 1, 0]))
nt.assert_true(uvf.flag_array.mean() == 2 * uvc.Nants_data /
uvf.flag_array.size)
def test_to_baseline_flags():
uv = UVData()
uv.read_miriad(test_d_file)
uvf = UVFlag(uv)
uvf.to_waterfall()
uvf.to_flag()
uvf.flag_array[0, 10, 0] = True # Flag time0, chan10
uvf.flag_array[1, 15, 0] = True # Flag time1, chan15
uvf.to_baseline(uv)
nt.assert_true(np.all(uvf.baseline_array == uv.baseline_array))
nt.assert_true(np.all(uvf.time_array == uv.time_array))
times = np.unique(uvf.time_array)
ntrue = 0.0
ind = np.where(uvf.time_array == times[0])[0]
ntrue += len(ind)
nt.assert_true(np.all(uvf.flag_array[ind, 0, 10, 0]))
ind = np.where(uvf.time_array == times[1])[0]
ntrue += len(ind)
nt.assert_true(np.all(uvf.flag_array[ind, 0, 15, 0]))
nt.assert_true(uvf.flag_array.mean() == ntrue / uvf.flag_array.size)
def test_to_baseline_force_pol():
uv = UVData()
uv.read_miriad(test_d_file)
uvf = UVFlag(uv)
uvf.to_waterfall()
uvf.to_flag()
uvf.flag_array[0, 10, 0] = True # Flag time0, chan10
uvf.flag_array[1, 15, 0] = True # Flag time1, chan15
uvf.polarization_array[0] = -4 # Change pol, but force pol anyway
uvf.to_baseline(uv, force_pol=True)
nt.assert_true(np.all(uvf.baseline_array == uv.baseline_array))
nt.assert_true(np.all(uvf.time_array == uv.time_array))
nt.assert_true(
np.array_equal(uvf.polarization_array, uv.polarization_array))
times = np.unique(uvf.time_array)
ntrue = 0.0
ind = np.where(uvf.time_array == times[0])[0]
ntrue += len(ind)
nt.assert_true(np.all(uvf.flag_array[ind, 0, 10, 0]))
ind = np.where(uvf.time_array == times[1])[0]
ntrue += len(ind)
nt.assert_true(np.all(uvf.flag_array[ind, 0, 15, 0]))
nt.assert_true(uvf.flag_array.mean() == ntrue / uvf.flag_array.size)
def test_flag_to_flag():
uvf = UVFlag(test_f_file)
uvf.to_flag()
uvf2 = uvf.copy()
uvf2.to_flag()
nt.assert_equal(uvf, uvf2)
def test_or_error():
uvf = UVFlag(test_f_file)
uvf2 = uvf.copy()
uvf.to_flag()
nt.assert_raises(ValueError, uvf.__or__, uvf2)
def test_uvflag_waterfall_error(self):
uvf = UVFlag(test_f_file)
uvf.to_waterfall()
uvf.to_flag()
nt.assert_raises(ValueError, xrfi.flag_xants, uvf, 0)