GraphDB's Visual Graph does not show any visible connections -


here's have (using mac):

  • an ontology created in protege (v5), incorporating classes established ontologies.
  • all classes given same base uri.
  • hermit, fact++, pellet, , ontop plugin reasoners used test ontology in protege, , no errors or messages returned.
  • protege's ontop plugin (v1.8) used map classes postgres rdbs column headers (table_column) , exported r2rml mapping file.
  • the ontop cli used materialize triples through jdbc postgres connection ontology in turtle format, according r2rml .ttl mappings file.

here's interactions graphdb (v8.2) start:

  • the graphdb repository created owl2-rl profile 'read only' unchecked.
  • all ontology , materialized data triples uploaded graphdb through graphdb-import folder in turtle format. options checked on upload, , same base uri provided.
  • the class hierarchy diagram suggests imported triples structured.
  • the class relationship circular network graph shows reasonable relationships between largest 10 classes.
  • the domain-range graph shows number of in-going , out-going connections nodes/individuals predicates.
  • sparql queries appear return expected values.

here's problem: when enter visual graph, don't see anything. when search , select value should have nodes, see single node message "this node has no visible connections."

what mean , can start troubleshooting? or visual graph buggy?


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