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Add random_seed keyword argument to sample_ppc #1389

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Merged
twiecki merged 1 commit into from
Sep 24, 2016
Merged

Add random_seed keyword argument to sample_ppc #1389

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4 changes: 3 additions & 1 deletion pymc3/sampling.py
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Original file line number Diff line number Diff line change
Expand Up @@ -314,7 +314,7 @@ def _soft_update(a, b):
a.update({k: v for k, v in b.items() if k not in a})


def sample_ppc(trace, samples=None, model=None, vars=None, size=None):
def sample_ppc(trace, samples=None, model=None, vars=None, size=None, random_seed=None):
"""Generate posterior predictive samples from a model given a trace.

Parameters
Expand Down Expand Up @@ -347,6 +347,8 @@ def sample_ppc(trace, samples=None, model=None, vars=None, size=None):
if vars is None:
vars = model.observed_RVs

seed(random_seed)

ppc = defaultdict(list)
for idx in randint(0, len(trace), samples):
param = trace[idx]
Expand Down