simpler way of building the metric

nifty6/operators/energy_operators.py

@@ -299,10 +299,7 @@ class StudentTEnergy(EnergyOperator):
         res = (((self._theta+1)/2)*(x**2/self._theta).ptw("log1p")).sum()
         if not x.want_metric:
             return res
-        if isinstance(self._theta, Field):
-            met = makeOp((self._theta+1) / (self._theta+3))
-        else:
-            met = ScalingOperator(self.domain, (self._theta+1) / (self._theta+3))
+        met = makeOp((self._theta+1) / (self._theta+3), self.domain)
         return res.add_metric(met)
 
 

nifty6/sugar.py

@@ -345,7 +345,7 @@ def makeOp(input, dom=None):
     if np.isscalar(input):
         if not isinstance(dom, (DomainTuple, MultiDomain)):
             raise TypeError("need proper `dom` argument")
-        return SalingOperator(dom, input)
+        return ScalingOperator(dom, input)
     if dom is not None:
         if not dom == input.domain:
             raise ValueError("domain mismatch")