Added SimPEGLinearOperator which has transpose functionality.

Changed ComplexMap to use this operator.

SimPEG/Utils/matutils.py

@@ -330,3 +330,14 @@ def invPropertyTensor(M, tensor, returnMatrix=False):
         return makePropertyTensor(M, T)
 
     return T
+
+
+
+from scipy.sparse.linalg import LinearOperator
+
+class SimPEGLinearOperator(LinearOperator):
+    """Extends scipy.sparse.linalg.LinearOperator to have a .T function."""
+    @property
+    def T(self):
+        return self.__class__((self.shape[1],self.shape[0]),self.rmatvec,rmatvec=self.matvec,matmat=self.matmat)
+