Patents data has massive number of references to grandparents, basically every patent has links to almost every grandparent patent in database, in order to resolve this problem famDiagram control provides option to hide direct grand parents connectors. So this demo instead of visualizing direct connections to grandparents shows them with custom template and highlights connection going via intermediate parents with highlight path annotation, so if some grandparent is outside of the current view, end user has indication that there are grandparents directly connected to the current cursor item outside of the screen view.
Try to switch hideGrandParentsConnectors to false/true
Family Diagram Specific
Group by option defines node placement in layout close to its parents or children when node is linked across multiple levels in hierarchy. See "alignment" data set.
The following option keeps items at the same levels after connections bundling.
The following option hides direct connectors to grand parents. It helps reduce diagrams connectors layout complexity. This option should be used together with dynamic highlighting of connectors to grandparents via immidiate parents, so information is not lost.
The following option enables natrix layout in family diagram. Nodes having the same set of parents and children are grouped into square shaped matrix in order to keep them visualy together.