State Electoral Divisions (SEDs)

Fetch ASGS geometries for the State Electoral Divisions (SEDs) geography.

Usage

sed(
  identifier = NULL,
  edition = NULL,
  reference_date = NULL,
  layer = c("gen", "full", "point"),
  where = NULL,
  filter_geom = NULL,
  predicate = c("intersects", "contains", "crosses", "overlaps", "touches", "within"),
  cache = getOption("ozgs.cache"),
  ...
)

Arguments

identifier

An optional character vector of named features to download from the specified geography. For most ASGS geographies, these are human-friendly names like e.g. "Tasmania" (a feature within the STE geography), "Sydney" (a feature within the LGA geography) or "2150" (a feature within the POA geography). If specified, identifier takes precedence over where. If neither identifier nor where are specified, all of the features in the specified geography will be downloaded.

edition

An ASGS edition: 1, 2, or 3.

reference_date

The geography's year of release. For most geographies, reference_year is optional and specifying an edition will be sufficient. However, for LGAs, CEDs and SEDs, the ASGS contains multiple releases per edition. For these geographies, a reference_date must be supplied to uniquely identify a release.

layer

One of:

"gen", the default. Fetches simplified geometries that have been generalised to 0.000025° or 2.5m.
"full", full ASGS geometries. Identical to ASGS Shapefile and Geopackage downloads.
"point", point geometries for each records in a geography.

where

An optional SQL WHERE clause to filter the features returned by the request. Ignored if identifier is specified.

filter_geom

An optional sf::sfc or single sf geometry to filter the records returned by the request.

predicate

An optional spatial predicate to specify the relation between filter_geom and geography. One of "intersects", "contains", "crosses", "overlaps", "touches", and "within".

cache

A cachem-compatible cache. If not otherwise specified, defaults to a memory cache. To persistently store downloaded ASGS geometries and data, supply an object created by cachem::cache_disk().

...

Additional arguments passed to arcgislayers::arc_read().

Details

State Electoral Divisions (SED) are an ABS Mesh Block approximation of state electoral districts. A state electoral district is an area legally prescribed for the purpose of returning one or more members to the State or Territory Lower Houses of Parliament, or the relevant equivalent. Boundaries are based on the most up to date state electoral districts available prior to publication. State Electoral Divisions may change as State or Territory authorities revise their boundaries. Where this occurs, State Electoral Divisions will be updated on an annual basis in conjunction with updates of other Non ABS Structures. Please note that ABS approximated boundaries do not match official legal or administrative boundaries and should only be used for statistical purposes. Further information about these regions can be found in the following publication: Australian Statistical Geography Standard (ASGS) Edition 3 https://www.abs.gov.au/statistics/standards/australian-statistical-geography-standard-asgs-edition-3/jul2021-jun2026

Availability

The following combinations of ASGS edition and reference_date are available:

`geography`	`edition`	`reference_date`
SED	1	2011
SED	2	2016
SED	2	2017
SED	2	2018
SED	2	2019
SED	2	2020
SED	3	2021
SED	3	2022