added picture

docs/resources/images/horizontalAxisRollingExample.png.license

+SPDX-FileCopyrightText: 2021 Helmholtz-Zentrum für Umweltforschung GmbH - UFZ
+
+SPDX-License-Identifier: GPL-3.0-or-later
\ No newline at end of file

saqc/funcs/rolling.py

@@ -64,6 +64,12 @@ class RollingMixin:
 
         center :
             If True, center the rolling window.
+
+        Notes
+        -----
+        .. figure:: /resources/images/horizontalAxisRollingExample.png
+
+           Rolling over multiple variables.
         """
         # HINT: checking in  _roll
         if target and (len(target) > 1) and (len(field) != len(target)):
@@ -145,6 +151,7 @@ class RollingMixin:
 
         center :
             If True, center the rolling window.
+
         """
         import warnings