added comment

jpmattern · jpmattern · commit 3a475c38abab · 2020-10-02T07:42:37.000-07:00
diff --git a/lib/matplotlib/colors.py b/lib/matplotlib/colors.py
@@ -1290,6 +1290,7 @@ def __init__(self, vcenter=0, halfrange=None, clip=False):
             array([0.25, 0.5 , 1.  ])
         """
         self._vcenter = vcenter
+        # calling the halfrange setter to set vmin and vmax
         self.halfrange = halfrange
         self.clip = clip
 
