Data Structure

This section specifies the proposed data structure for the attribution of land-use information.
Each set of attributes applies to one geographical unit and can contain information about the primary and ancillary land uses, as well as attributes for disambiguation, end-user reclassification, recording provenance, and operator comments.

attribute	type	example	notes
lu_code_primary	integer	1	Numerical land use code (primary use) at the primary level
lu_code_secondary	integer	2	Numerical land use code (primary use) at the secondary level
lu_code_tertiary	integer	3	Numerical land use code (primary use) at the tertiary level
lu_code	string	1.2.3	Complete land use code (primary use)
lu_description	string	Natural Heritage	Land use class label (primary use)
lu_code_ancillary	(sorted set of) string	2.2.0,3.2.1	Land use code (ancillary uses), multiple uses are to be specified with comma separation with optional whitespace characters
commod	(sorted set of) string	cattle dairy	Commodity type; multiple commodities are to be specified with comma separation with optional whitespace characters
commod_ancillary	(sorted set of )string	pulpwood	Commodity type(s) relating to the ancillary land use code(s)
manage	(sorted set of) string	irrigation spray,organic	Management practices; multiple practices are to be specified with comma separation with optional whitespace characters
manage_ancillary	string	free standing	Management practices relating to the ancillary use code(s)
land_estate	string	freehold	Estate type
land_status	string	[TBD]	Land status type (public–private continuum; terminology to be determined)
water	string	lake	Water type (null for non-water)
zone	string	Large format retail zone	District plan zone; terminology to be taken from the Zone Framework Standard (National Planning Standards, 2019)
permeability	string	sealed	Permeability type (sealed or unsealed)
confidence	integer	3	Confidence 1-4, a qualitative assessment relating to the overall operator confidence in the assigned classification
luc_date	date	2024-05-26	Date of land use classification, “last modified”
source_data	(sorted set of) string	DVR,NRC,LCDB v5,field mapping	Primary source data (e.g. field mapping, local knowledge, ancillary dataset, air photo, imagery). Often, multiple sources of information are combined to come to a conclusion; to a reasonable extent, all should be specified.
source_data_doi	(set of) uri	doi:10.26060/W5B4-WK93	Optional (i.e. when available) DOI or HTTP URI for source data
source_date	string (date range)	[2011-05-02,2025-01-03)	Combined date range of spatial features (e.g. image date, ancillary photo date, last edited date) in primary source data, at feature (preferentially) or dataset level, using interval notation for inclusive and exclusive endpoints
source_scale	string (integer interval)	[10,60]	Combined integer (interval)[https://en.wikipedia.org/wiki/Interval_(mathematics)] indicating the precision of source data, in the CRS units (metres)