Special edge types

» An edge of a special type is specified by

   edge type: { source: "title"  target: "title"  attributes }

» Supported edge types

   backedge          // direction opposite to normal edges;
   nearedge          // source and target on the same level,
   leftnearedge      // target to the left,
   rightnearedge     // target to the right;
   bentnearedge      // a bent edge consists of
   leftbentnearedge  // a horizontal and a vertical part,
   rightbentnearedge // useful for drawing control flow graphs

Anchor points

» An edge can be attached to an explicit line within a node by

   anchor: integer

» Anchors are not compatible with near edges

» Anchors only apply if the graph orientation is top to bottom

Example (see slide)

   graph: {edge.arrowstyle: line

   node: { title: "A"  label: "line1\nline2" }
   node: { title: "t1" }
   node: { title: "t2" }
   node: { title: "t3" }
   node: { title: "t4" }

   edge:         { source: "A"  target: "t1"  anchor: 1 }
   edge:         { source: "A"  target: "t2"  anchor: 2 }
   edge:         { source: "t3" target: "A"  }
   nearedge:     { source: "t2" target: "t3" }
   bentnearedge: { source: "t2" target: "t4" }

          }

   // see also C data structs example

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Last modified on 22 April 2002 by webmaster. © 2002 AbsInt.
URL: http://www.aisee.com/gdl/nutshell/edges.htm

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