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docs: details about jackknife conversion added

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Fabian Joswig 2021-11-15 14:38:21 +00:00
parent 1fabdb0751
commit 85f37a7abf
2 changed files with 5 additions and 1 deletions
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3
pyerrors/obs.py
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@ -567,7 +567,8 @@ class Obs:
for the given ensemble and replicum. The zeroth entry of the array contains
the mean value of the Obs, entries 1 to N contain the N jackknife samples
derived from the Obs. The current implementation only works for observables
defined on exactly one ensemble and replicum.
defined on exactly one ensemble and replicum. The derived jackknife samples
should agree with samples from a full jackknife analysis up to O(1/N).
"""
if len(self.names) != 1:

3
tests/obs_test.py
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@ -519,3 +519,6 @@ def test_jackknife():
tmp_jacks[i + 1] = (n * mean - full_data[i]) / (n - 1)
assert np.allclose(tmp_jacks, my_obs.export_jackknife())
my_new_obs = my_obs + pe.Obs([full_data], ['test2'])
with pytest.raises(Exception):
my_new_obs.export_jackknife()