FIX: empty list to reshape2d

jklymak · jklymak · commit 3f6df2eb0e43 · 2019-02-10T15:44:32.000-08:00
diff --git a/lib/matplotlib/cbook/__init__.py b/lib/matplotlib/cbook/__init__.py
@@ -1416,6 +1416,8 @@ def _reshape_2D(X, name):
     """
     # Iterate over columns for ndarrays, over rows otherwise.
     X = np.atleast_1d(X.T if isinstance(X, np.ndarray) else np.asarray(X))
+    if len(X) == 0:
+        return [[]]
     if X.ndim == 1 and not isinstance(X[0], collections.abc.Iterable):
         # 1D array of scalars: directly return it.
         return [X]
