Selection filter library

Selection filter library is a powerful tool enabling to create filters to be used on meshes. You can access to it from the Main Menu via Tools / Selection filter library

In this dialog window

Library file name shows the path and the file name where your filters will be stored. By clicking the browse button you can load an existing filter library.

Names of filters lists the filters created or uploaded for the current study. You can Add or Delete filters.  

In Filter name box you can specify the name for your filter. By default it is prefixed with the corresponding entity type.

Each filter can be applicable to Nodes, Edges, Faces or Volumes. You can combine many criteria in one filter, but they all must be of the same Entity type. The Add button creates a new criterion at the end of the list of criteria. The Insert button creates a new criterion after the selected criterion. The Remove button deletes the selected criterion. The Clear button deletes all criteria.  

Each Entity type has its specific list of criteria, however all filters have common syntax. For each criterion you should specify the Threshold Value and whether we search for the elements that should be More, Less or Equal to this Value. You should also specify if the criterion is Unary or Binary.   

Some criteria should have the additional parameter of Tolerance.