Fixed mean in create_power_operator in sugar.py

nifty/field.py

@@ -90,7 +90,7 @@ class Field(Loggable, Versionable, object):
             elif isinstance(val, Field):
                 distribution_strategy = val.distribution_strategy
             else:
-                self.logger.debug("Datamodel set to default!")
+                self.logger.debug("distribution_strategy set to default!")
                 distribution_strategy = gc['default_distribution_strategy']
         elif distribution_strategy not in DISTRIBUTION_STRATEGIES['global']:
             raise ValueError(

nifty/sugar.py

@@ -20,7 +20,7 @@ def create_power_operator(domain, power_spectrum, distribution_strategy='not'):
                val=power_spectrum,
                distribution_strategy=distribution_strategy)
 
-    f = fp.power_synthesize(std=0)
+    f = fp.power_synthesize(mean=1, std=0)
 
     power_operator = DiagonalOperator(domain, diagonal=f)