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Allow for complex values in flux iterables
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matteobachetti committed Sep 27, 2023
1 parent 5fac201 commit f9afbee
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Showing 2 changed files with 23 additions and 2 deletions.
8 changes: 6 additions & 2 deletions stingray/fourier.py
Original file line number Diff line number Diff line change
Expand Up @@ -1077,6 +1077,10 @@ def get_flux_iterable_from_segments(times, gti, segment_size, n_bin=None, fluxes
binned = fluxes is not None
if binned:
dt = np.median(np.diff(times[:100]))
cast_kind = float
fluxes = np.asarray(fluxes)
if np.iscomplexobj(fluxes):
cast_kind = complex

fun = _which_segment_idx_fun(binned, dt)

Expand All @@ -1093,9 +1097,9 @@ def get_flux_iterable_from_segments(times, gti, segment_size, n_bin=None, fluxes
).astype(float)
cts = np.array(cts)
else:
cts = fluxes[idx0:idx1].astype(float)
cts = fluxes[idx0:idx1].astype(cast_kind)
if errors is not None:
cts = cts, errors[idx0:idx1]
cts = cts, errors[idx0:idx1].astype(cast_kind)

yield cts

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17 changes: 17 additions & 0 deletions stingray/tests/test_fourier.py
Original file line number Diff line number Diff line change
Expand Up @@ -48,6 +48,23 @@ def test_norm():
assert np.isclose(pdsfrac[good].mean(), pois_frac, rtol=0.01)


@pytest.mark.parametrize("dtype", [np.float32, np.float64, np.complex64, np.complex128])
def test_flux_iterables(dtype):
times = np.arange(4)
fluxes = np.ones(4).astype(dtype)
errors = np.ones(4).astype(dtype) * np.sqrt(2)
gti = np.asarray([[-0.5, 3.5]])
iter = get_flux_iterable_from_segments(times, gti, 2, n_bin=None, fluxes=fluxes, errors=errors)
cast_kind = float
if np.iscomplexobj(fluxes):
cast_kind = complex
for it, er in iter:
assert np.allclose(it, 1, rtol=0.01)
assert np.allclose(er, np.sqrt(2), rtol=0.01)
assert isinstance(it[0], cast_kind)
assert isinstance(er[0], cast_kind)


class TestCoherence(object):
@classmethod
def setup_class(cls):
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