[Epic] Implement SUFF visualisation

[jamiefeiss]

Implement the display of SUFF ontology data in the web browser.

This implementation should follow stages:

• Nominal geometries
  • simple case of equally likely, unordered geometries
  • should be able to click on a geometry and have a pop-up of basic properties, in particular a schema:citation predicate, indicating a literal (textual description), a hyperlink or a structured schema:CreativeWork which will describe a scholarly work
• Ordinal geometries
  • ordered, evenly spaced (certainty) geometries with a 0 and a 1 polygon auto-calculated
• Ordinal geometries improved 1 calculation
  • same as above but with 1 polygon or point calculated
• Interval
  • same as above but with certainty given by a nominated RDF literal value
    • default value is rdf:value but could be another predicate if indicated as below
• Ration
  • same as above but with Geometries indicating 0 and 1 certainties
  • the other Geometries - not 0 or 1 - may or may not contain certainty values. Space evenly if values not given

Software packaging

The software should be:

• pure JS
  • it may only be able to work with Turtle RDF, if N3 is used
  • would be nice if it could parse other RDF formats, especially JSON-LD, if not too hard to arrange
• available via npm or equivalent
  • let me know what the preference is
• should be able to use SUFF RDF data as the sole input
  • all other config values should have defaults to allow RDF-only input to work
• library should export pure GeoJSON
  • library reads SUFF RDF, calculates the opacities and 0, 1 polygons as needed, and outputs GeoJSON that can be read by Google Maps / MapBox etc.
  • may need config options to choose the "style" of GeoJSON that the various mapping tools can understand
• demo implementation framework should be given
  • create a second repo for a framework deployment of the library, with example data etc.
  • use MapBox (or the same thing you used for CAM)

Indicating a certainty predicate

The suff:hasUncertaintyRelations value must be either <https://linked.data.gov.au/def/levels-of-measurement/interval> or <https://linked.data.gov.au/def/levels-of-measurement/ratio>.

Here suff:certaintyIndicator is used on the GeometryCollection to indicate that each Geometry will have a certainty (must be floating point value between 0 and 1) indicated by the ex:specialCertainty predicate. If not given, assume rdf:value is the indicator.

<...>
    a geo:GeometryCollection ;
    suff:hasUncertaintyRelations <https://linked.data.gov.au/def/levels-of-measurement/interval> ;
    suff:certaintyIndicator ex:specialCertainty ;
    rdfs:member [
        a geo:Geometry ;
        geo:asWKT "POLYGON ((...))"^^geo:wktLiteral ;
        ...
        ex:specialCertainty 0.23
        ...
    ] ,
    [
        ...
    ] ;
.

Resources

SUFF model (updated): https://w3id.org/suff/

Tasks

• [x] #2
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