Selections

Dialog mask to display selections. Selections are a container for sisHYD objects.

Menu > Selection – Provides a number of selections replacing the current list with the objects matching the described criterion.
Menu > Action – Provides a number of predefined actions operating on the listed items exclusively. The action is restricted to object types in scope of the operation.
Note: For example, the update of pipe length will take all pipes of the selection into account but ignore any nodes or consumer.
Name – The name of the selection.
Type – 2 types of selections, the user-defined selection and the selection of profile paths exist. The respective type of selection is displayed and cannot not be changed.
- User-defined selections may take up any sisHYD objects, while selections for profile paths contain excluding nodes, which determine the way process by the network.
Critical path – This option is available only for selections of the type "Profilplad". With selection of the option the path extends automatically of the calculation adjusted by the last node on the list for the "critical node".
Note: The critical node distinguishes by the fact that the difference between necessary difference of pressure and actually available difference of pressure over the consumer is minimum.

Warning: This means that the node with the smallest difference of pressure does not have to be mandatory the critical node. Usually this condition is met when all consumergroups request the same minimal differential pressure.
New Removes all selected objects from the list.
Delete – Removes the currently selected entries from the list.
Invert – Inverts the selection in the list.
Previous object indicate – Inverts the selection in the list.
Selected object indicate – Inverts the selection in the list.
Next object indicate – Inverts the selection in the list.
Union – Inserts the objects in the fence to the selection list.
Difference – Removes all objects which are also in the fence from the selection list.
Intersection – Keeps only the objects which are also in the fence in the selection list.
List of the objects – Lists all objects of the selection. The objects are provided with a serial number.
For easier identification in the second column the appropriate object symbol is drawing. The list supports the multiple choice of objects.
User-defined selections can be sorted over all columns. For profile paths the assortment is not available.
Note: The object dialog is opened by double-clicking on a row.
Objects can be moved within the list by drag & drop.
Description – Here 500 characters are available to comment on the selection. For generated selections sisHYD independently creates the comment and refers to the origin of the selection.