fix reshaping

mdolab · May 8, 2024 · dc22846 · dc22846
1 parent a9f8ae7
commit dc22846
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/pyoptsparse/pyOpt_history.py b/pyoptsparse/pyOpt_history.py
@@ -651,7 +651,10 @@ def getValues(self, names=None, callCounters=None, major=True, scale=False, stac
         # reshape lists into numpy arrays
         for name in names:
             # we just stack along axis 0
-            data[name] = np.stack(data[name], axis=0)
+            if len(data[name]) > 0:
+                data[name] = np.stack(data[name], axis=0)
+            else:
+                data[name] = np.array(data[name])
             # we cast 1D arrays to 2D, for scalar values
             if data[name].ndim == 1:
                 data[name] = np.expand_dims(data[name], 1)