Many operations on nodes are done by first selecting one or more nodes, and then choosing the operation to do. Netica indicates a selected node by drawing it with negative colors.
Selecting Single Nodes: Select a node by clicking once on it. You may have to click on the node's title if clicking on other parts of it cause some action to occur. Otherwise, right-click over a node and choose Select.
Selecting Multiple Nodes: Click down on the background and then drag the selection rectangle to include at least a part of each node. Choosing Edit → Select Nodes→ All (or pressing ctrl+a) will select all the nodes in the net. To unselect all the nodes currently selected, just click once on the net background.
Modifying: When you select new nodes, any nodes that were previously selected will become unselected, unless you hold down the ctrl key while clicking or dragging. In that case the selected status of the new node(s) will be reversed, allowing you to add to, or remove from, the collection of selected nodes. Another way is to right-click on a node whose selection status you wish to change, and choose Select or Deselect.
Repeating: If you often need to select the same set of nodes, you can set them as a node-set, and then select them by choosing Edit → Select Nodes→ In NodeSet.
Reversing: To reverse the selection so that it consists of only the nodes currently not selected, press ctrl+shift+a or choose Edit → Select Nodes → Invert Selection.
By Properties: Alternatively, you can select nodes and links according to their properties or relationships. For example, you can select nodes with equations, findings, dependent on, parents, ancestors, children and descendents of selected nodes by choosing Edit → Select Nodes…
From Text: Edit → Select Nodes → Listed in Clipboard will select all the nodes whose name (not title) appears in the text currently copied to the clipboard. For example, if your word processing program has a document that mentions several nodes by name, you could select that text, copy it, and then do Select Nodes → Listed in Clipboard in Netica to select them.
Save/Restore: You can save the current selection as text with Report → List of Selected (more info), and then restore it using Edit → Select Nodes → Listed in Clipboard.
Doesn’t Work: If you are selecting belief-bar or meter style nodes, then you should click on the title (or name) of the node, since clicking elsewhere may be interpreted as entering a finding (in which case the node will be darkened instead of drawn with negative colors).
Links: To select a link, click directly on it. It will become drawn in hilited outline form. As with nodes, if the ctrl key is held down while clicking, it will reverse the selection status of only the links being clicked on, which can be used to add or remove from your collection of selected links. You can also right-click directly on a link and choose Select or Deselect.
Note: Links cannot be selected by dragging the selection rectangle over them. Nodes and links cannot both be selected at the same time, so whenever you select links, any nodes that are selected will become unselected, and vice-versa.
See also Selecting
Nodes and Links by Properties.