Set initial min times to be 0

Author: hyanwong

tsdate/prior.py

@@ -1010,7 +1010,7 @@ def _truncate_priors(ts, priors, nodes_to_date=None, progress=False):
         zero_value = 0
     elif priors.probability_space == "logarithmic":
         zero_value = -np.inf
-    constrained_min_times = np.copy(tables.nodes.time)
+    constrained_min_times = np.zeros_like(tables.nodes.time)
     constrained_min_times[ts.samples()] = tables.nodes.time[ts.samples()]
     constrained_max_times = np.full_like(constrained_min_times, np.inf)