AusPIX Literal

This is the human-readable version of the datatype descriptor for dggs:auspixLiteral.

A datatype is a data literal object, identified by an IRI, used by the Resource Description Framework (RDF) [2]. Commonly used datatypes in RDF are those defined originally for XML in W3C XML Schema Definition Language (XSD) 1.1 Part 2: Datatypes [1] which include fundamental datatypes such as xsd:string, xsd:integer as well as derived datatypes such as xsd:nonPositiveInteger.

This datatype is derived from xsd:string and is used to store serializations of geometry descriptors made according to the AusPIX Discrete Global Grid System (DGGS) [3].

The full IRI defining this datatype is:

• https://w3id.org/dggs/auspixLiteral

Literal contents format

NOTE: A full description of the structure of content within this literal is not complete, however the following description is correct, even though partial.

The following ABNF [4] syntax specification formally defines this literal:

auspixLiteral = dggs-type LWSP geometric-data

dggs-type = cell-type / celllist-type / orderedcelllist-type

cell-type = "CELL" LSWP "(" LWSP cell-id LWSP ")"

celllist-type = "CELLLIST" LSWP "((" LWSP *(cell-id LWSP-1) LWSP "))"

orderedcelllist-type = "ORDEREDCELLLIST" LSWP "((" LWSP *(cell-id LWSP-1) LWSP "))"

cell-id = ("N" / "O" / "P" / "Q" / "R" / "S") *(cell-digit)

cell-digit = "0" / "1" / "2" / "3" / "4" / "5" / "6" / "7" / "8"

The token LWSP is zero or more whitespace characters with newlines permitted.

The token LWSP-1 is one or more whitespace characters with newlines permitted.

Examples

CELL(R23)

CELLLIST ((
    R8338506 R8338507 
    R8338508 R8338516 
    R8338530 R8338531 
    R8338532 R8338534 
    R8338540
))

References

[1] Brickley, D. & Guha R.V. (eds) RDF Schema 1.1. W3C Recommendation 25 February 2014. https://www.w3.org/TR/rdf-schema/

[2] Peterson, D. & Gao, S. & Malhotra A. & Sperberg-McQueen C.M. & Thompson, H.S. (eds) W3C XML Schema Definition Language (XSD) 1.1 Part 2: Datatypes. W3C Recommendation 5 April 2012. https://www.w3.org/TR/xmlschema11-2/

[3] Bell, J.G AusPIX Conceptual Framework for Data Integration based on DGGS Location. Technical Report, Geoscience Australia (2020). DOI: https://doi.org/10.26186/140152[10.26186/140152]

[4] Internet Engineering Task Force, RFC 5234: Internet Standard 68: Augmented BNF for Syntax Specifications: ABNF. IETF Request for Comment (2008) https://tools.ietf.org/html/std68