diff --git a/nifty4/extra/energy_tests.py b/nifty4/extra/energy_tests.py index 64cebb5be997a0b4f0bc0d67219a90784b93c927..719f8a8e45fe36eca4e617e69411d84772b14425 100644 --- a/nifty4/extra/energy_tests.py +++ b/nifty4/extra/energy_tests.py @@ -18,6 +18,7 @@ import numpy as np from ..field import Field +from ..sugar import from_random __all__ = ["check_value_gradient_consistency", "check_value_gradient_curvature_consistency"] @@ -26,7 +27,7 @@ __all__ = ["check_value_gradient_consistency", def _get_acceptable_energy(E): if not np.isfinite(E.value): raise ValueError - dir = Field.from_random("normal", E.position.domain) + dir = from_random("normal", E.position.domain) # find a step length that leads to a "reasonable" energy for i in range(50): try: