--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/+sbp/D1Upwind.m	Wed Sep 07 13:40:41 2016 +0200
@@ -0,0 +1,59 @@
+classdef D1Upwind < sbp.OpSet
+    properties
+        norms % Struct containing norm matrices such as H,Q, M
+        boundary  % Struct contanging vectors for boundry point approximations
+        derivatives % Struct containging differentiation operators
+        borrowing % Struct with borrowing limits for different norm matrices
+        m % Number of grid points.
+        h % Step size
+    end
+
+    methods
+        function obj = D1Upwind(m,h,order)
+
+            switch order
+                case 2
+                    [H, HI, Dp, Dm, e_1, e_m] = sbp.upwind2(m,h);
+                case 3
+                    [H, HI, Dp, Dm, e_1, e_m] = sbp.upwind3(m,h);
+                case 4
+                    [H, HI, Dp, Dm, e_1, e_m] = sbp.upwind4(m,h);
+                case 5
+                    [H, HI, Dp, Dm, e_1, e_m] = sbp.upwind5(m,h);
+                case 6
+                    [H, HI, Dp, Dm, e_1, e_m] = sbp.upwind6(m,h);
+                case 7
+                    [H, HI, Dp, Dm, e_1, e_m] = sbp.upwind7(m,h);
+                case 8
+                    [H, HI, Dp, Dm, e_1, e_m] = sbp.upwind8(m,h);
+                case 9
+                    [H, HI, Dp, Dm, e_1, e_m] = sbp.upwind9(m,h);
+                otherwise
+                    error('Invalid operator order %d.',order);
+            end
+
+            obj.h = h;
+            obj.m = m;
+
+            obj.norms.H = H;
+            obj.norms.HI = HI;
+
+            obj.boundary.e_1 = e_1;
+            obj.boundary.e_m = e_m;
+
+            obj.derivatives.Dp = Dp;
+            obj.derivatives.Dm = Dm;
+        end
+    end
+
+    methods (Static)
+        function lambda = smallestGrid(obj)
+            error('Not implmented')
+        end
+    end
+end
+
+
+
+
+