--- a/+scheme/Utux.m	Fri Mar 29 14:50:50 2019 -0700
+++ b/+scheme/Utux.m	Wed Apr 10 11:00:27 2019 -0700
@@ -73,28 +73,24 @@
          end
 
         % Returns the boundary operator op for the boundary specified by the string boundary.
-        % op        -- string or a cell array of strings
+        % op        -- string
         % boundary  -- string
-        function varargout = getBoundaryOperator(obj, op, boundary)
+        function o = getBoundaryOperator(obj, op, boundary)
+            assertIsMember(op, {'e'})
+            assertIsMember(boundary, {'l', 'r'})
 
-            if ~iscell(op)
-                op = {op};
-            end
+            o = obj.([op, '_', boundary]);
+        end
 
-            for i = 1:numel(op)
-                switch op{i}
-                case 'e'
-                    switch boundary
-                    case 'l'
-                        e = obj.e_l;
-                    case 'r'
-                        e = obj.e_r;
-                    otherwise
-                        error('No such boundary: boundary = %s',boundary);
-                    end
-                    varargout{i} = e;
-                end
-            end
+        % Returns square boundary quadrature matrix, of dimension
+        % corresponding to the number of boundary points
+        %
+        % boundary -- string
+        % Note: for 1d diffOps, the boundary quadrature is the scalar 1.
+        function H_b = getBoundaryQuadrature(obj, boundary)
+            assertIsMember(boundary, {'l', 'r'})
+
+            H_b = 1;
         end
 
         function N = size(obj)
@@ -102,14 +98,4 @@
         end
 
     end
-
-    methods(Static)
-        % Calculates the matrices needed for the inteface coupling between boundary bound_u of scheme schm_u
-        % and bound_v of scheme schm_v.
-        %   [uu, uv, vv, vu] = inteface_coupling(A,'r',B,'l')
-        function [uu, uv, vv, vu] = interface_coupling(schm_u,bound_u,schm_v,bound_v)
-            [uu,uv] = schm_u.interface(bound_u,schm_v,bound_v);
-            [vv,vu] = schm_v.interface(bound_v,schm_u,bound_u);
-        end
-    end
-end
\ No newline at end of file
+end