5 Graph Description Language (GDL) - Absint

For details on user actions, see section User Actions (p. 20) and also be refered to useractionname
on p. 89.
• useractionname
Type: integer : string
Default value: 1 : “User Action 1”, 2 : “User Action 2”, 3 : “User Action 3”,
4 : “User Action 4”
Attribute of: top-level graph
Description:
This attribute enables names for the user actions menu entries in the Auxiliaries menu to
be introduced.
These names appear in the submenu of the menu item Auxiliaries in the menu line. For
details on user actions, see section User Actions (p. 20) and useractioncmd on p. 88.
• vertical_order
Type: integer or maxlevel
Default value: none (corresponds to -1)
Attribute of: subgraphs
Description:
In a hierarchical layout, this attribute specifies the vertical position of a summary node of
a folded subgraph. maxlevel tries to position the node as the maximum calculated level.
Generally for all nodes, their vertical position is called their level or rank (see p. 117). level
is a synonym for vertical_order.
All nodes of level 0 form the uppermost layer (the first layer), if the orientation is top-down.
Nodes of level 1 form the second layer, etc.
The level specification is not in effect unless automatic layout is being calculated. Layout
is calculated automatically if there is at least one node without a specified location (see loc
attribute for nodes (p. 96) and summary nodes (p. 78).
Note: The level specification may conflict with a near edge (p. 44) specification, because
the source and target node of a near edge have to have the same level. In this case, the level
specification of the source or the target node of the near edge is ignored.
• view
Type: cfish, fcfish, dcfish, pfish, fpfish, dpfish
Default value: normal view, i. e. no fish-eye view
Attribute of: top-level graph
Description:
This attribute enables one of the six fish-eye views to be selected.
If a graph is large only a small amount of it is visible in the graph window because of the
fixed size of the window. Reducing the graph so that it fits into the window causes details
to no longer be recognizable. The solution to this is fish-eye views. A fish-eye view is a
coordinate transformation, causing the view of the graph to be distorted.
There is a focus which is magnified so that all the details can be seen. Parts of the graph that
are far away from the focus are scaled down.
89