3 \page filters_page About filters
5 \b Filters allow picking only the mesh elements satisfying to a
6 specific condition or a set of conditions. Filters can be used to create
7 or edit mesh groups, remove elements from the mesh, control
8 mesh quality by different parameters, etc.
10 Several \ref filtering_criteria "filtering criteria" can be combined
11 together by using logical operators \a AND and \a OR. In addition, a
12 filter criterion can be reverted using logical operator \a NOT.
14 Some filtering criteria use the functionality of \ref quality_page
15 "mesh quality controls" to filter mesh nodes / elements by specific
16 characteristic (Area, Length, etc).
18 The functinality of mesh filters is available in both GUI and TUI
21 - In GUI, filters are available in some dialog boxes via "Set Filters"
22 button, clicking on which opens the \ref filtering_elements "dialog box"
23 allowing to specify the list of filter criteria to be applied to the
24 current selection. See \subpage selection_filter_library_page page to
25 learn more about selection filters and their usage in GUI.
27 - In Python scripts, filters can be used to choose only some mesh
28 entities (nodes or elements) for the operations, which require the
29 list of entities as input parameter (create/modify group, remove
30 nodes/elements, etc) and for the operations, which accept objects
31 (groups, sub-meshes) as input parameter. The page \ref
32 tui_filters_page provides examples of the filters usage in Python