--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/+grid/Empty.m	Thu Sep 07 10:21:15 2017 +0200
@@ -0,0 +1,53 @@
+classdef Empty < grid.Grid & grid.Structured
+    properties
+        dim
+    end
+
+    methods
+        function obj = Empty(D)
+            obj.dim = D;
+        end
+        % n returns the number of points in the grid
+        function o = N(obj)
+            o = 0;
+        end
+
+        % d returns the spatial dimension of the grid
+        function o = D(obj)
+            o = obj.dim;
+        end
+
+        % points returns a n x d matrix containing the coordinates for all points.
+        function X = points(obj)
+            X = sparse(0,obj.dim);
+        end
+
+        % Restricts the grid function gf on obj to the subgrid g.
+        function gf = restrictFunc(obj, gf, g)
+            error('Restrict does not make sense for an empty grid')
+        end
+
+        % Projects the grid function gf on obj to the grid g.
+        function gf = projectFunc(obj, gf, g)
+            error('Project does not make sense for an empty grid')
+        end
+
+        % Return the grid.boundaryIdentifiers of all boundaries in a cell array.
+        function bs = getBoundaryNames(obj)
+            bs = {};
+        end
+
+        % Return coordinates for the given boundary
+        function b = getBoundary(obj, name)
+            b = sparse(0,obj.dim-1);
+        end
+
+        function h = scaling(obj)
+            h = 1;
+        end
+
+        function s = size(obj)
+            s = zeros(1, obj.dim);
+        end
+    end
+end
\ No newline at end of file