--- a/src/ov-struct.h	Thu Nov 21 20:47:49 2002 +0000
+++ b/src/ov-struct.h	Fri Nov 22 16:25:49 2002 +0000
@@ -79,6 +79,18 @@
 			 const SLList<octave_value_list>& idx,
 			 const octave_value& rhs);
 
+  int rows (void) const { return map.rows (); }
+
+  int columns (void) const { return map.columns (); }
+
+  int length (void) const
+  {
+    int r = rows ();
+    int c = columns ();
+
+    return (r == 0 || c == 0) ? 0 : ((r > c) ? r : c);
+  }
+
   bool is_defined (void) const { return true; }
 
   bool is_constant (void) const { return true; }