Bugfix esplodeded fogi labels

pygsti/models/model.py

@@ -488,6 +488,13 @@ def __setstate__(self, state_dict):
     ## Get/Set methods
     ##########################################
 
+    @property
+    def parameter_labels(self):
+        """
+        A list of labels, usually of the form `(op_label, string_description)` describing this model's parameters.
+        """
+        return self._ops_paramlbls_to_model_paramlbls(self._paramlbls)
+
     @property
     def sim(self):
         """ Forward simulator for this model """
@@ -1037,7 +1044,7 @@ def _get_shift(j): return _bisect.bisect_left(indices_to_remove, j)
                 obj.set_gpindices(new_inds, self, memo)
 
         self._paramvec = self._ops_paramvec_to_model_paramvec(w)
-        self._paramlbls = self._ops_paramlbls_to_model_paramlbls(wl)
+        self._paramlbls = wl
         self._param_bounds = wb if _param_bounds_are_nontrivial(wb) else None
         if debug: print("DEBUG: Done rebuild: %d op params" % len(w))
 

pygsti/models/modelparaminterposer.py

@@ -77,7 +77,7 @@ def ops_paramlbls_to_model_paramlbls(self, wl):
         # This can and should be improved later - particularly this will be awful when labels (els of wl) are tuples.
         ret = []
         for irow in range(self.inv_transform_matrix.shape[0]):
-            lbl = ' + '.join(["%g%s" % (coeff, str(lbl)) for coeff, lbl in zip(self.inv_transform_matrix[irow, :], wl)])
+            lbl = ' + '.join(["%g%s" % (coeff, str(lbl)) for coeff, lbl in zip(self.inv_transform_matrix[irow, :], wl) if abs(coeff)>1e-10])
             ret.append(lbl)
         return ret
 

pygsti/protocols/gst.py

@@ -1133,6 +1133,9 @@ def _to_nice_serialization(self):
             for lbl, goparams in self.gaugeopt_argument_dicts.items():
                 goparams_list = [goparams] if hasattr(goparams, 'keys') else goparams
                 serialize_list = []
+                if lbl == 'trivial_gauge_opt':
+                    dicts_to_serialize[lbl] = None
+                    continue
                 for goparams_dict in goparams_list:
                     to_add = goparams_dict.copy()
                     if 'target_model' in to_add:
@@ -1164,6 +1167,9 @@ def _to_nice_serialization(self):
     def _from_nice_serialization(cls, state):  # memo holds already de-serialized objects
         gaugeopt_argument_dicts = {}
         for lbl, serialized_goparams_list in state['gaugeopt_argument_dicts'].items():
+            if lbl == 'trivial_gauge_opt':
+                gaugeopt_argument_dicts[lbl] = None
+                continue
             goparams_list = []
             for serialized_goparams in serialized_goparams_list:
                 to_add = serialized_goparams.copy()