Welcome to CivilGEO Knowledge Base
Welcome to CivilGEO Knowledge Base
Welcome to CivilGEO Knowledge Base
Welcome to CivilGEO Knowledge Base
Selection sets are groups of elements (i.e., a subset of the entire network model) that have been selected by the user and saved in the project. A selection set allows the user to recall the selected elements later in order to perform some sort of operation. For example, the user might create a selection set of representative junctions to perform a fire flow analysis.
In CivilGEO, the Selection Set ribbon menu allows the user to open the existing selection sets, define new selection sets, edit the saved selection sets, and merge the selected selection sets. The Selection Set ribbon menu contains four commands:
These commands can be used for all the available HEC-HMS/HEC-RAS element types – diversions, junctions, nodes, reaches, sinks, sources, storage areas, and subbasins.
The Open Selection Set command allows the user to load a previously saved selection set.
To open the saved selection set, follow the steps below:
The following sections describe the Open Selection Set command and how to interact with the above dialog box.
The Choose Selection Set section contains a data grid listing all the existing selection sets in the model. The user can select any selection set in the data grid to load them on the Map View.
The user can select the selection set in one of the following ways:
This section allows the user to delete the selection set listed in the Choose Selection Set data grid.
To delete a selection set, follow the steps below:
The Save Selection Set command allows the user to define and save the currently selected elements to an element selection set.
To save the selection set, follow the steps below:
The following sections describe the Save Selection Set command and how to interact with the above dialog box.
The Select elements entry field allows the user to manually select elements from the Map View. Click the [Pick] button and the Selection Sets dialog box will temporarily disappear. A prompt will be displayed on the status bar instructing the user what to do next. The user can then select elements from the Map View. While selecting elements, the user can use the [Shift] key to deselect any previous element selection. Once finished, press the [Enter] key or right-click and select Done from the displayed context menu. The dialog box will be redisplayed, and the total number of selected elements will be displayed in the Select elements entry.
The user can click the [Clear] button to deselect the selected elements from the selection set and redo the entire process.
Note that the user can also preselect the elements from the Map View before running this command. If the elements were preselected on the Map View, the number of selected elements will be displayed in the Select elements entry.
The Element type dropdown combo box option allows the user to select the type of elements for the selection set. The following elements are provided in the dropdown combo box.
Notes:
After selecting elements from the Map View, the user can further refine the selection set. For example, suppose that the user has selected a mixture of element types and the dropdown combo box lists these as All Element Types. The user can then choose Junctions element in the dropdown combo box and select junctions on the Map View. The element count in the Select elements entry will then reflect only the selected junctions. Again, if the user has chosen Reaches in the dropdown combo box, the element count in the Select elements entry will then update to reflect only the selected reaches.
The Selection set name entry field allows the user to provide the name for the selection set. After entering the name, click the [Save] button. The selection set is then saved to the project database.
Note that each defined selection set must have a unique name. Otherwise, the following confirmational dialog box will be displayed by clicking the [Save] button.
The Edit Selection Set command allows the user to add and remove elements contained in the already defined selection set.
To edit the selection set, follow the steps below:
The following sections describe the Edit Selection Set command and how to interact with the above dialog box.
The Existing selection set dropdown combo box allows the user to select the selection set to edit. The dropdown combo box lists all the selection sets that are available in the project.
The Element type read-only field lists the element type(s) contained within the selection set.
For example, if the selection set contains a junction element, then this read-only field will display the Junction. If the selection set contains a mixture of elements, then this read-only field will display All Elements.
The Add/remove elements read-only field will display the number of elements contained within the selected selection set. Click the [Pick] button to select elements from the Map View to add or remove from the selection set. Clicking on the [Pick] button causes the Selection Sets dialog box to temporarily disappear, and all the elements contained within the selection set will be highlighted on the Map View. The user can then add and remove elements from the selection set by interactively selecting elements on the Map View. While selecting elements, the user can use the [Shift] key to deselect any previous element selection. Once finished, press the [Enter] key or right-click and select Done from the displayed context menu. The dialog box will be redisplayed, and the total number of selected elements will be displayed in the Add/remove elements entry.
The user can click the [Clear] button to deselect the selected elements from the selection set and redo the entire process.
When all the options have been properly defined, click the [Save Changes] button, and the software will update the selected selection set in the project.
The Merge with Selection Set command allows the user to merge the currently selected elements into a single selection set.
To merge the selection sets, follow the steps below:
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