aiSee for Unix: User Manual<>index

Attribute format

Attributes are specified as follows:

attribute keyword : attribute value

All attributes are optional except for the title attribute of nodes and subgraphs and the source and target attributes of edges. The order of attributes is irrelevant.

The attribute value depends on the attribute and is one of the following:

  • String, e.g. title: "family tree"
  • Integer, e.g. width: 300
  • Floating point number, e.g. scaling: 1.2
  • Keyword, e.g. shape: rhomb
  • Combination of the above, e.g. fontname: "helvB10"
  • File name, e.g. iconfile: "myicons/butterfly.png"

It is possible to specify default values for all node or edge attributes in a top-level graph or subgraph. The default attributes are specified as follows:

  • node.attribute keyword : attribute value
  • edge.attribute keyword : attribute value

Such specifications can appear anywhere in a top-level graph or subgraph specification and apply from there on to all nodes and edges respectively (including back edges, near edges and bent near edges) where the corresponding attribute is not set explicitly. Each default specification applies until another default specification for the same attribute appears or until the end of the subgraph or top-level graph specification is reached.

Groups of nodes and edges can be folded (see grouping of nodes). A summary node is displayed for all nodes of a folded group of nodes. In addition, summary edges to this summary node are displayed for sets of edges to nodes of the group. It is possible to specify the attributes for these summary nodes and edges that come from a folding operation. This allows folded node groups to be given a different appearance than normal nodes and edges. The attributes for these summary nodes or replacement edges are specified as follows:

  • foldnode.attribute keyword : attribute value
  • foldedge.attribute keyword : attribute value

» Next: Region format
» Prev.: Edge format

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