--- a/liboctave/Array3.h
+++ b/liboctave/Array3.h
@@ -75,6 +75,19 @@
 
   void resize (octave_idx_type r, octave_idx_type c, octave_idx_type p, const T& val)
     { this->resize_and_fill (r, c, p, val); }
+
+  Array3<T> sort (octave_idx_type dim = 0, sortmode mode = UNDEFINED) const
+    {
+      Array<T> tmp = Array<T>::sort (dim, mode);
+      return Array3<T> (tmp, tmp.rows (), tmp.columns (), tmp.pages ());
+    }
+
+  Array3<T> sort (Array<octave_idx_type> &sidx, octave_idx_type dim = 0,
+		 sortmode mode = UNDEFINED) const
+    {
+      Array<T> tmp = Array<T>::sort (sidx, dim, mode);
+      return Array3<T> (tmp, tmp.rows (), tmp.columns (), tmp.pages ());
+    }
 };
 
 #endif