Analyzing Groups

This task shows how to analyze and visualize the content of a group (nodes, elements, faces of element, edges of element).

• The group set must be updated.
• Elements belonging to connections are taken into account in the box groups and the sphere groups.
  You have to update spatial groups created before the V5R17 release even if they are already up-to-date to make sure that connection elements are taken into account.

Open the sample49_1.CATAnalysis document from the samples directory for this task.

1. Update the surface group.

2. Right-click the surface group in the specification tree and select Analyze Group .

   The Group Content dialog box appears. Node: gives you the number of nodes belonging to the selected group and lets you visualize these nodes on the geometry. Element: gives you the number of elements belonging to the selected group and lets you visualize these elements on the geometry. Face of element: gives you the number of element faces belonging to the selected group and lets you visualize these element faces on the geometry. Edge of element: gives you the number of element edges belonging to the selected group and lets you visualize these element edges on the geometry.

3. Select the Node check box.

   The Group Content dialog box gives you the number of nodes belonging to the selected group. In this particular example, you can see that the select group is composed of 182 nodes. Moreover, the nodes can be visualized on the geometry.

4. Select the Face of element check box.

   Both the Group Content dialog box and the geometry are updated.
   	If you want to visualize only the element faces (without the nodes), clear the Node check box. You will obtain the following result:

5. Click OK.