Facet

Facet is a visualization. It is a piece of program code that processes a given RDF node and its context, the whole graph, and draws a visualization of a certain type.

In RDF, a facet is referenced by an IRI: this way, Linked Data can tell Iolanta how it can be visualized.

Facet Type	In RDF	In Code
Python based facet	python://some_module.FacetClass	Python class, inherited from iolanta.facets.Facet

More types are planned (1).

1. In particular, WASM based facets downloadable from the Web and executed in a sandbox.

Facets

For now, the only facets that Iolanta supports are bundled with it.

• TitleFacet

  ---

  Render a human readable title for a node.

  • URI: python://iolanta.facets.title.TitleFacet
  • Outputs: string

• Class

  ---

  For an RDFS or OWL Class, render a list of its instances that we know about.

  • URI: python://iolanta.facets.textual_class.ClassFacet
  • Outputs: Textual widget

• TextualDefaultFacet

  ---

  All RDF properties and their values for a given node in interactive textual UI. (Not best naming though.)

  • URI: python://iolanta.facets.textual_default.TextualDefaultFacet
  • Outputs: Textual widget

• GraphFacet

  ---

  For an RDF graph, list triples that it contains.

  • URI: python://iolanta.facets.textual_graph.GraphFacet
  • Outputs: Textual widget

• NanopublicationFacet

  ---

  Display contents of a Nanopublication.

  • URI: python://iolanta.facets.textual_nanopublication.NanopublicationFacet
  • Outputs: Textual widget

• OntologyFacet

  ---

  Display terms of an Ontology.

  • URI: python://iolanta.facets.textual_ontology.OntologyFacet
  • Outputs: Textual widget

• TextualPropertyPairsTableFacet

  ---

  Display Subject → Object pairs for an RDF Property.

  • URI: python://iolanta.facets.textual_property_pairs_table.TextualPropertyPairsTableFacet
  • Outputs: Textual widget

• Ideas for more?

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  Feel free to ➕ add an issue!