3 \page merging_nodes_page Merging nodes
5 This functionality allows user to detect groups of coincident nodes
6 with specified tolerance; each group of the coincident nodes can be
7 then converted to the single node.
9 \image html mergenodes_ico.png "Merge nodes menu button"
11 <em>To merge nodes of your mesh:</em>
13 <li>Choose \b Modification -> \b Transformation -> <b>Merge nodes</b>
14 menu item. The following dialog box shall appear:</li>
16 \image html mergenodes_auto.png
19 <li>\b Name is the name of the mesh whose nodes will be merged.</li>
20 <li>\b Automatic or \b Manual mode allows choosing how the nodes are
21 processed. In \b Manual mode you can adjust groups of coincident nodes
22 detected by the program and/or select any nodes to be merged.</li>
23 <li>\b Tolerance is a maximum distance between nodes sufficient for
25 <li>Activation of <b>No merge of corner and medium nodes of quadratic
26 cells</b> check-box prevents merging medium nodes of quadratic
27 elements with corner nodes. This check-box is enabled provided
28 that the selected mesh includes quadratic elements.</li>
29 <li><b>Exclude groups from detection</b> group allows to ignore the
30 nodes which belong to the specified mesh groups. This control is
31 active provided that the mesh includes groups.</li>
32 <li><b>Nodes to keep during the merge</b> group allows to specify
33 nodes to keep in the mesh. (By default a node being the first in a
34 group of coincident nodes is kept.) It is possible to either select
35 nodes in the Viewer or select groups of any element type whose nodes
38 <li>\a Selection button activates selection of nodes to keep.</li>
39 <li><b>Nodes</b> button activates selection of nodes in the
41 <li><b>Groups and sub-meshes</b> button activates selection of
42 groups and sub-meshes.</li>
43 <li>\b Add button adds selected nodes or groups to the list.</li>
44 <li> Nodes or groups selected in the list can be removed using \b
50 <li><b>Automatic mode:</b>
53 <li>In the \b Automatic Mode all nodes within the indicated tolerance
54 will be merged. The nodes which belong to the groups specified in
55 <b>Exclude groups from detection</b> will NOT be taken into account.</li>
58 <li> The \b Manual mode gives you full control of what the operation will do.
59 In this mode additional controls are available:
61 <li>\b Detect button generates the list of coincident nodes for the given
63 <li><b>Coincident nodes</b> is a list of groups of nodes for
64 merging. Upon \b Apply all nodes of each group will
65 be united into one node. The first node of a group is kept and
66 the others are removed. By default the first node has a lowest ID
69 <li>\b Remove button deletes the selected group from the list.</li>
70 <li>\b Add button adds to the list a group of nodes selected in the
72 <li><b>Select all</b> check-box selects all groups.</li>
73 <li><b>Show double nodes IDs</b> check-box shows/hides identifiers of
74 nodes of selected groups in the 3D viewer.</li>
78 \image html mergenodes.png
81 <li><b>Edit selected group of coincident nodes</b> list allows
82 editing the selected group:
85 <center>adds to the group the nodes selected in the viewer.</center>
87 \image html remove.png
88 <center>removes from the group the selected nodes.</center>
91 <center>moves the selected node to the first position in the
92 group in order to keep it in the mesh.</center><br>
96 <li>To confirm your choice click \b Apply or <b>Apply and Close</b> button.</li>
99 \image html merging_nodes1.png
100 <center> The initial object. Nodes 25, 26 and 5 are added to <b>Nodes
101 to keep during the merge</b> group.
104 \image html merging_nodes2.png
105 <center> The object has been merged
108 <br><b>See Also</b> a sample TUI Script of a
109 \ref tui_merging_nodes "Merge Nodes" operation.