X-Git-Url: http://git.salome-platform.org/gitweb/?p=modules%2Fsmesh.git;a=blobdiff_plain;f=doc%2Fsalome%2Fgui%2FSMESH%2Finput%2Fremoving_nodes_and_elements.doc;h=fd506d2b76e01ba038c55e6fca22e337604b64c0;hp=be1944a48199175c94c95ee3c82ecd2d3edd5fc9;hb=45b7e5c3e156b516962f86d15df69b12d8060363;hpb=79b1ac2b6df9117f16f11d444b1f165d477a1813

diff --git a/doc/salome/gui/SMESH/input/removing_nodes_and_elements.doc b/doc/salome/gui/SMESH/input/removing_nodes_and_elements.doc
index be1944a48..fd506d2b7 100644
--- a/doc/salome/gui/SMESH/input/removing_nodes_and_elements.doc
+++ b/doc/salome/gui/SMESH/input/removing_nodes_and_elements.doc
@@ -6,7 +6,9 @@
 
 <ul>
 <li>\ref removing_nodes_anchor "Nodes"</li>
+<li>\ref removing_orphan_nodes_anchor "Orphan Nodes"</li>
 <li>\ref removing_elements_anchor "Elements"</li>
+<li>\ref clear_mesh_anchor "Clear Mesh Data"</li>
 </ul>
 
 <br>
@@ -17,28 +19,57 @@
 <ol>
 <li>Select your mesh in the Object Browser or in the 3D viewer.</li>
 
-<li>From the Modification menu choose Remove and from the associated
-submenu select the Remove nodes, or just click <em>"Remove nodes"</em>
+<li>From the <em>Modification</em> menu choose <em>Remove</em> and from the associated
+submenu select the <em>Nodes</em>, or just click <em>"Remove nodes"</em>
 button in the toolbar.
 
-\image html image88.gif
+\image html remove_nodes_icon.png
 <center><em>"Remove nodes" button</em></center>
 
 The following dialog box will appear:
 
 \image html removenodes.png
 
-In this dialog box you can specify one or several nodes (with pressed
-Shift button) by choosing them in the 3D viewer.
+In this dialog box you can specify one or several nodes:
+<ul>
+<li>choose mesh nodes with the mouse in the 3D Viewer. It is
+possible to select a whole area with a mouse frame; or</li> 
+<li>input the node IDs directly in <b>ID Elements</b> field. The selected nodes will be highlighted in the
+viewer; or</li>
+<li>apply Filters. <b>Set filter</b> button allows to apply a filter to the selection of nodes. See more
+about filters in the \ref selection_filter_library_page "Selection filter library" page.</li>
+</ul>
+
+
 </li>
 </ol>
 
 \note Be careful while removing nodes because if you remove a definite
 node of your mesh all adjacent elements will be also deleted.
 
-\image html remove_nodes1.png
+<br>
+\anchor removing_orphan_nodes_anchor
+<h2>Removing orphan nodes</h2>
 
-\image html remove_nodes2.png
+There is a quick way to remove all orphan (free) nodes.
+
+<em>To remove orphan nodes:</em>
+<ol>
+<li>Select your mesh in the Object Browser or in the 3D viewer.</li>
+
+<li>From the <em>Modification</em> menu choose <em>Remove</em> and from the associated
+submenu select <em>Orphan Nodes</em>, or just click <em>"Remove orphan nodes"</em>
+button in the toolbar.
+
+\image html remove_orphan_nodes_icon.png
+<center><em>"Remove orphan nodes" button</em></center>
+
+The following Warning message box will appear:
+
+\image html removeorphannodes.png
+
+Confirm nodes removal by pressing "Yes" button.
+</ol>
 
 <br>
 \anchor removing_elements_anchor
@@ -48,8 +79,8 @@ node of your mesh all adjacent elements will be also deleted.
 <ol>
 <li>Select your mesh in the Object Browser or in the 3D viewer.</li>
 
-<li>From the \b Modification menu choose \b Remove and from the
-associated submenu select the Remove elements, or just click
+<li>From the <em>Modification</em> menu choose <em>Remove</em> and from the
+associated submenu select the <em>Elements</em>, or just click
 <em>"Remove elements"</em> button in the toolbar.
 
 \image html remove_elements_icon.png
@@ -59,15 +90,48 @@ The following dialog box will appear:
 
 \image html removeelements.png
 
-In this dialog box you can specify one or several elements of your
-mesh (with pressed Shift button) by choosing them in the 3D viewer.
+In this dialog box you can specify one or several elements
+<ul>
+<li>choose mesh elements with the mouse in the 3D Viewer. It is
+possible to select a whole area with a mouse frame; or</li> 
+<li>input the element IDs directly in <b>ID Elements</b> field. The selected elements will be highlighted in the
+viewer; or</li>
+<li>apply Filters. <b>Set filter</b> button allows to apply a filter to the selection of elements. See more
+about filters in the \ref selection_filter_library_page "Selection filter library" page.</li>
+</ul>
+
 </li>
-<li>Click OK or Apply  to confirm deletion of the specified elements.</li>
+<li>Click \b Apply or <b>Apply and Close</b> to confirm deletion of the specified elements.</li>
+</ol>
+
+\image html remove_nodes1.png "The initial mesh"
+
+\image html remove_nodes2.png "The mesh with some elements removed" 
+
+<br>
+\anchor clear_mesh_anchor
+<h2>Clearing Mesh Data</h2>
+
+<em>To remove all nodes and all types of cells in your mesh at once:</em>
+<ol>
+<li>Select your mesh in the Object Browser or in the 3D viewer.</li>
+
+<li>From the Modification menu choose Remove and from the associated
+submenu select the Clear Mesh Data, or just click <em>"Clear Mesh Data"</em>
+button in the toolbar. You can also right-click on the mesh in the
+Object Browser and select Clear Mesh Data in the pop-up menu.</li>
 </ol>
 
-\image html remove_elements1.png
+<center>
+\image html mesh_clear.png
+<em>"Clear Mesh Data" button</em></center>
 
-\image html remove_elements2.png
+\note This command works in a different way in different situations: <ul>
+  <li> if the mesh is computed on a geometry, then "Clear Mesh Data" removes
+    all elements and nodes.</li>
+  <li> if the mesh is not based on a geometry (imported, compound, created from
+    scratch etc.), then "Clear Mesh Data" removes only the elements and
+    nodes computed by algorithms. If no such elements or nodes have been created, can remove nothing.</li></ul>
 
 <br><b>See Also</b> a sample TUI Script of a 
 \ref tui_removing_nodes_and_elements "Removing Nodes and Elements" operation.