diff -r b0386d2c180d -r 6e6da40091b7 +multiblock/EmptyGrid.m
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/+multiblock/EmptyGrid.m	Fri Sep 08 14:38:29 2017 +0200
@@ -0,0 +1,47 @@
+classdef EmptyGrid < grid.Empty & multiblock.Grid
+    methods
+        function obj = EmptyGrid(D)
+            obj@multiblock.Grid({},cell(0,0));
+            obj@grid.Empty(D);
+        end
+
+        % n returns the number of points in the grid
+        function o = N(obj)
+            o = N@grid.Empty(obj);
+        end
+
+        % d returns the spatial dimension of the grid
+        function o = D(obj)
+            o = D@grid.Empty(obj);
+        end
+
+        % points returns a n x d matrix containing the coordinates for all points.
+        function X = points(obj)
+            X = points@grid.Empty(obj);
+        end
+
+        % Restricts the grid function gf on obj to the subgrid g.
+        function gf = restrictFunc(obj, gf, g)
+            gf = restrictFunc@grid.Empty(obj);
+        end
+
+        % Projects the grid function gf on obj to the grid g.
+        function gf = projectFunc(obj, gf, g)
+            gf = projectFunc@grid.Empty(obj);
+        end
+
+        % Return the grid.boundaryIdentifiers of all boundaries in a cell array.
+        function bs = getBoundaryNames(obj)
+            bs = getBoundaryNames@grid.Empty(obj);
+        end
+
+        % Return coordinates for the given boundary
+        function b = getBoundary(obj, name)
+            b = getBoundary@grid.Empty(name);
+        end
+
+        function s = size(obj)
+            s = size@multiblock.Grid(obj);
+        end
+    end
+end