Corrected lambda function syntax that was not compatible with python 3. Change name of argument orderpos by simple order in RootNorm

alvarosg · alvarosg · commit b5801ea45d9e · 2016-10-23T23:52:00.000+01:00
diff --git a/doc/users/plotting/examples/colormap_normalizations_rootnorm.py b/doc/users/plotting/examples/colormap_normalizations_rootnorm.py
@@ -60,7 +60,7 @@ def makePlot(norm, label):
 
 makePlot(None, 'Regular linear scale')
 
-norm = colors.RootNorm(vmin=0, orderpos=5)
+norm = colors.RootNorm(vmin=0, order=5)
 makePlot(norm, 'Root norm')
 
 norm = colors.MirrorRootNorm(
diff --git a/lib/matplotlib/colors.py b/lib/matplotlib/colors.py
@@ -1211,8 +1211,8 @@ def __init__(self,
         refpoints_cm = np.array([center_cm])
         refpoints_data = np.array([center_data])
 
-        flist = [lambda (x):(-fneg(-x + 1) + 1), fpos]
-        finvlist = [lambda (x):(-fneginv(-x + 1) + 1), fposinv]
+        flist = [(lambda x:(-fneg(-x + 1) + 1)), fpos]
+        finvlist = [(lambda x:(-fneginv(-x + 1) + 1)), fposinv]
 
         super(MirrorArbitraryNorm, self).__init__(flist=flist,
                                                   finvlist=finvlist,
@@ -1293,14 +1293,14 @@ class RootNorm(SingleArbitraryNorm):
     >>> norm=PositiveRootNorm(vmin=0,orderpos=7)
     """
 
-    def __init__(self, orderpos=2, vmin=None, vmax=None, clip=False):
+    def __init__(self, order=2, vmin=None, vmax=None, clip=False):
         """
-        *orderpos*:
+        *order*:
         Degree of the root used to normalize the data for the positive
         direction.
         """
-        super(RootNorm, self).__init__(f=(lambda x: x**(1. / orderpos)),
-                                       finv=(lambda x: x**(orderpos)),
+        super(RootNorm, self).__init__(f=(lambda x: x**(1. / order)),
+                                       finv=(lambda x: x**(order)),
                                        vmin=vmin, vmax=vmax, clip=clip)
 
 
