--- /dev/null
+.. _create_dual_mesh_page:
+
+****************
+Create Dual Mesh
+****************
+
+We can create the dual of a Tetrahedron Mesh which will be a polyhedron mesh.
+The Mesh is created using MEDCoupling computeDualMesh function.
+
+*To create a dual mesh:*
+
+.. |img| image:: ../images/create_dual_mesh_icon.png
+
+From the contextual menu in the Object Browser of from the **Mesh** menu select
+**Create Dual Mesh** or click *"Create Dual Mesh"* button |img| in the toolbar.
+
+The following dialog box will appear:
+
+.. image:: ../images/create_dual_mesh_dlg.png
+ :align: center
+
+In the dialog:
+
+* specify the mesh for which to create the dual mesh:
+ * **Select whole mesh** from the study tree. If a mesh was selected before calling function it will be preselected.
+ * If the mesh is not made of only Tetrahedrons a error message will be displayed and you won't be allowed to go through.
+* specify the **New Mesh Name**;
+* activate **Project boundary elements on shape** for the boundary points of the
+ dual mesh to be projected on their associated shape.
+
+* Click **Apply** or **Apply and Close** button to confirm the operation.
+
+----------------------------
+Limitations of the dual mesh
+----------------------------
+
+Only 2d groups will be transferred to the dual mesh.
+
+If you have convex shape the projection might not improve the mesh.
+
+
+**See Also** a sample script of :ref:`tui_create_dual_mesh`.
