Element Selection: Select elements to be affected by a command
The dialog box will be popped up if inside another dialog the button “New selection” is pressed. This dialog also may be invoked independent of another command. In this case, it offers the opportunity of specifying and saving 3 different selection sets, which can be activated later by other commands. Element selection sets also may be stored permanently in a file.
The dialog remains active until pressing „OK“ or „Cancel“ explicitly close it. It’s possible to do multiple selections as partial selections which can be combined with the current global selection by multiple ways (see „Kind of combination“) The button “get part selection” carries out such a partial selection according to the given parameters and shows the number of elements included. The dialog always shows the current number of selected elements.
By pressing “Plot” the current partial selection respectively the current global selection can be checked graphically. Within the graphical window the center of gravity of all selected elements is marked.
Button „Do combination“ combines the current partial selection with the currently saved global selection using the marked option and produces a new global selection. The number of selected elements is shown. Default for the global selection is always the latest selection except the latest selection contained all elements. In this case the global selection is set to zero.
Following options are available:
New partial selection for combination
For the specifications of partial selections the following alternatives are available:
New: Erase actual partial selection.
All: All macro respectively finite elements currently in memory are selected.
ID range: First and last ID of a range of elements must be given.
Group range: First and last group ID of a range of groups must be given.
Element types: Lowest and highest geometrical type ID must be given. All elements with type ID within this range are selected.
Mechanical types: Lowest and highest mechanical type ID must be given. All elements with type ID within this range are selected.
Layer ID: The lowest and the highest layer ID must be given. All elements with assigned layer ID’s within this range are selected.
xyz-limits: These elements with all nodes inside the given coordinates are selected. The range must be given with xl,xr,yl,yr,zl,zr,cs where l,r stands for left and right coordinate limits and cs is the (optional) ID of a coordinate system. With a given coordinate system all nodes are transformed to this system prior to checking.
Layer names: Within a list box all defined layer names are shown. Multiple names can be selected.
Set1 - Set3: Selection sets previously defined and saved (see “Save as”) are used.
File: Load selection sets from file. The file name has to be selected from a dialog.
Graphically: Following selection has to be done graphically within the OpenGL window. All selectable elements are marked by a symbol in the center of gravity. A dialog box pops up where you should choose the kind of the graphically selection.
Input field: Within this input field you have to specify the parameters needed for some of the above options. The values are separated by space or comma.
Get part selection: After specifying the options for determining partial selections this button causes the calculation of the partial selection. The number of found elements is shown within the dialog.
Plot part selection: Pressing this button will mark all elements contained in the current part selection with a symbol.
Kind of combination
The current partial selection can be combined with the current global selection. The following alternatives are available for this combination:
New selection: The currently stored global selection is deleted.
Add part selection: Merge partial selection with global selection.
Intersection: Only elements within both selections build up the new global selection.
Delete part selection: Elements, which are in the partial selection, are removed from the global selection.
Get complement: Only complementary elements, that is only these elements not contained within the partial selection build up the global selection.
Do combination: Pressing this button will cause the combination of the partial and global selection to be done.
Plot selected elements: Pressing this button will mark all elements contained in the current global selection with a symbol.
Save selection as
Set 1- Set 3: The current global selection will be saved into the chosen set and can later be used by other commands. Because external element ID's are saved these sets are only valid until element numbering won't be changed by deleting or sorting the elements.
File: Currently in sets 1 - 3 stored selections are saved in a file. The file name has to be given in a file selection dialog, it gets the extension .ews.