SALOME documentation central

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.

selectionfilterlibrary.png

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 before 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 can also reverse the sense of a criterion using Unary operator Not and you should specify logical relations between criteria using Binary operators Or and And.
Some criteria should have the additional parameter of Tolerance.

When we create a Standalone Group using filters (for this click Set Filters button in the Create Group menu), the menu for setting filters looks a bit differently. Toggling Insert filter in viewer checkbox enables to preview the group selected with your current filter in the viewer.
In the Source field you choose if the filter will be applied to the whole Mesh, the Initial Selection or the Current Group.
Copy from... button gives you a possibility to load an existing filter from Selection filter library and Add to... button gives you a possibility to save your current filter in the Library.
Note: If the button Apply and Close is disabled, there is no selected mesh in the Object Browser and the filter can not be created. You have to select the mesh and the button will be enabled.

a-filteronfaces.png

Some criteria are applicable to all Entity types:

Some criteria are applicable to all Entity types, except for Nodes

The following criteria are applicable to all Entity types except for Volumes:

Additional criteria to select mesh Edges are the following:

Additional criteria to select mesh Faces are the following:

Additional criteria to select mesh Volumes are the following:


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