Index: kernel/include/IMP/Vector3D.h
===================================================================
--- kernel/include/IMP/Vector3D.h	(revision 441)
+++ kernel/include/IMP/Vector3D.h	(working copy)
@@ -38,6 +38,14 @@
     return vec_[i];
   }
 
+// suppress a warning
+#ifndef SWIG
+  //! \return A single component of this vector (0-2).
+  /** This is more usual notation for C++. Not useful for python.*/
+  Float operator[](unsigned int i) const {
+    return get_component(i);
+  }
+#endif
   //! \return the scalar product of two vectors.
   /** \param[in] vec2 The other vector to use in the product.
     */