Delete intermediate value

src/foo.m

@@ -12,10 +12,10 @@ Y = y * v';
 for i=1:length(x)
   for j=1:length(y)
       vec = [ X(i,j); Y(i,j) ];
-      val = duneevaluate(vec);
-      f(i,j) = val;
+      f(i,j) = duneevaluate(vec);
   end
 end
+
 axis([-10, 10, -10, 10]);
 surf(x, y, f)
 hold on;