pass a string to NDArray(name=...)

Currently, `name` is a `Model`.

Author: basnijholt

pymc3/smc/smc.py

@@ -255,7 +255,7 @@ def posterior_to_trace(self):
         varnames = [v.name for v in self.variables]
 
         with self.model:
-            strace = NDArray(self.model)
+            strace = NDArray(self.model.name)
             strace.setup(lenght_pos, self.chain)
         for i in range(lenght_pos):
             value = []