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fix: explicit Exception for combined fit constant edge case. (#202)

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Fabian Joswig 2023-07-14 14:26:54 +01:00 • committed by GitHub
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commit 5c2a6de56f
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17
tests/fits_test.py
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@ -1143,6 +1143,23 @@ def test_fit_dof():
assert np.all(np.array(cd[1:]) > 0)
def test_combined_fit_constant_shape():
N1 = 16
N2 = 10
x = {"a": np.arange(N1),
"": np.arange(N2)}
y = {"a": [pe.pseudo_Obs(o + np.random.normal(0.0, 0.1), 0.1, "test") for o in range(N1)],
"": [pe.pseudo_Obs(o + np.random.normal(0.0, 0.1), 0.1, "test") for o in range(N2)]}
funcs = {"a": lambda a, x: a[0] + a[1] * x,
"": lambda a, x: a[1]}
with pytest.raises(ValueError):
pe.fits.least_squares(x, y, funcs, method='migrad')
funcs = {"a": lambda a, x: a[0] + a[1] * x,
"": lambda a, x: a[1] + x * 0}
pe.fits.least_squares(x, y, funcs, method='migrad')
def fit_general(x, y, func, silent=False, **kwargs):
"""Performs a non-linear fit to y = func(x) and returns a list of Obs corresponding to the fit parameters.