_update process_vector_argument to always return 1D ndarray

murrayrm · murrayrm · commit b10e3e2ef8af · 2024-06-29T19:21:54.000-07:00
diff --git a/control/nlsys.py b/control/nlsys.py
@@ -2585,6 +2585,8 @@ def _process_vector_argument(arg, name, size):
         val = np.array(val_list)
     elif np.isscalar(arg) and size is not None:     # extend scalars
         val = np.ones((size, )) * arg
+    elif isinstance(arg, np.ndarray):
+        val = arg.reshape(-1)                       # convert to 1D array
     else:
         val = arg                                   # return what we were given
 
