Merge pull request matplotlib#21986 from anntzer/invlogma

Author: jklymak

lib/matplotlib/scale.py

@@ -16,7 +16,6 @@
 import textwrap
 
 import numpy as np
-from numpy import ma
 
 import matplotlib as mpl
 from matplotlib import _api, docstring
@@ -251,7 +250,7 @@ def __str__(self):
         return "{}(base={})".format(type(self).__name__, self.base)
 
     def transform_non_affine(self, a):
-        return ma.power(self.base, a)
+        return np.power(self.base, a)
 
     def inverted(self):
         return LogTransform(self.base)