Nodes

The scenegraph is a directional acyclic graph. It contains many nodes. Each node has a right-click menu, whose entries depend on the type of the node. Figure 5-1 is a scenegraph snapshot.

Nodes in Figure 5-1 can be divided into 2 categories with the deciding factor if there is a triangle to their left:

• No triangle to the left: This is a leaf node.

• A triangle to the left: This is a branch node. The state of a branch node is indicated by the orientation of the triangle to its left:

  • means this branch node is collapsed and you can click the circle to expand it.

  • indicates this branch node is expanded and you can click the circle to collapse it

Alternatively, nodes in the scenegraph can be divided into 3 main categories according to what type of objects they represent: collections (data sets), viewports (plots), and dialogs.

• Collection nodes. Each collection node has a icon to its left. Available right-click menu entries are: Categorize by Colors... , Comment... , Delete , Hide All , Show All , Rename... , Report in HTML... , Report All in HTML... , and Summarize .

• Viewport nodes, representing plots generated by Argos's visualization tools and analytical tools. A icon to the left of a viewport node means the plot it represents is not iconified. An iconified plot, such as "Boxplot 6" in Figure 5-1, does not have this eye icon and its name is printed in light gray. Available right-click menu entries are: Delete , Hide , Show , Hide All , Show All , Rename... , Report in HTML... , and Report All in HTML... .

• Dialog nodes, representing non-modal dialogs. A icon to the left of a dialog node means the dialog it represents is not iconified. Available right-click menu entries are: Delete , Hide , Show , Report in HTML... , and Report All in HTML... . Additionally, Hide All and Show All will be in the right-click menu of a dialog node if data can be retrieved from the non-modal dialog it is representing. For example, a dialog node representing the dialog resulting from invoking Find Similar in a parallel coordinate plot will have these 2 menu items.

Left clicking a non-hidden, non-collection node in the scenegraph will make the corresponding window rise to the top. Making the window of a plot, a list view, or a non-modal dialog the focused window (for example, clicking its title bar) will highlight the corresponding node in the scenegraph.