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use lambdify

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This commit is contained in:
Valentin Boettcher 2019-05-13 12:05:30 +02:00
parent 9f55468de5
commit 465c24b970
1 changed files with 3 additions and 2 deletions
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5
SecondaryValue/SecondaryValue.py
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@ -114,7 +114,7 @@ class SecondaryValue:
derivs = self._get_derivatives(*list(errors.keys()))
# ugly, but works for now
terms = [np.array([(derivs[var] * err[i]).subs(values) \
terms = [np.array([(derivs[var](values) * err[i]) \
for var, err in errors.items() \
if len(err) > i and err[i] > 0],
dtype=self._dtype) for i in range(1, max_uncertainties)]
@ -164,7 +164,8 @@ class SecondaryValue:
for var in args:
if var not in self._derivatives:
self._derivatives[var] = diff(self._parsed, var)
self._derivatives[var] = \
sympy.lambdify(args, diff(self._parsed, var))
return {var: self._derivatives[var] for var in args}