rdf_graphviz.pl -- Interface to graphviz for RDF graphs

Graphviz is a general purpose graph vizualization library. Its home-page is http://www.graphviz.org/ This module translates an RDF graph represented as a list of rdf(S,P,O) into a .dot file.

author

- Jan Wielemaker

 gviz_write_rdf(+Stream, +Graph, +Options) is det

Write the graph Triples to Stream in dot compatible format. Options:

graph_attributes(+Attributes)

Additional overall graphs attributes for dot. Each attribute is of the format Name(Value) and written as Name="Value". The term size(W,H) is accepted as well.

max_label_length(+Len)

Truncate labels to Len characters. Default is 25. Use inf to print the full label.

lang(+Lang)

Lang is the language used for the labels. See resource_label/4.

smash(+Properties)

Smash networks connected by one of the given properties. Currently only [owl:sameAs].

bags(Bags)

How to handle bags. Values are

graph

Show as normal nodes (i.e. handles as normal RDF)

merge(Shape, Max)

Put the members in a dot node using Shape. Only place the first Max members and add a note stating '... showing N of M' to indicate the actual number

edge_links(+Boolean)

If false (default true) do not put href atributes on edges.

wrap_url(:Goal)

If present, URLs of the graph are replaced with the result of call(Goal, URL0, URL)

edge_hook(:Goal)

Called to define the attributes for a link as call(Goal, URI, Attributes, Options). Attributes is a list of Name(Value) terms. See edge_attributes/3.

shape_hook(:Goal)

Called to define the shape of a resource as call(Goal, URI, Shape, Options). Shape is a list of Name(Value) terms. See shape/3.

bag_shape_hook(:Goal)

Called to define the shape parameters for a bag (Table). called as call(Goal, Members, Shape) Shape is a list of Name(Value) terms.

label_hook(:Goal)

Called to define the label of a resource as call(Goal, URI, Language, MaxLength, Label). Label is an atom.

target(Target)

If present, add target=Target to all attribute lists that have an href attribute.

display_lang(+Boolean)

Display the language of literal nodes, defaults to true.