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This dataset was last updated on Stats NZ Geographic Data Service on 30 Jun 2020.
da9d8778-6205-8174-1d70-9e6f35b4afcc
eng
dataset
Geospatial Team
Stats NZ
0508 525 525
geography@stats.govt.nz
20200120
ISO 19115:2003/19139
1.0
2239
SA22020_V1_00_Centroid_Inside
This dataset contains the inside centroid point layer for the annually released statistical area 2 (SA2) boundaries as at 1 January 2020.The "inside" centroid is a point which always falls inside each SA2 polygon as this is often desirable. The placement of the point is typically in the widest part of the polygon. The algorithms used are proprietary to ESRI and are related to label placement. Note that the "inside" centroid is NOT always the same as the center of gravity ("true" centroid) of the polygon as in some situations the true centroid may fall outside the SA2 geometry. The dataset contains the EASTING and NORTHING attributes of the centroid point in NZGD2000 New Zealand Transverse Mercator (EPSG:2193) and LATITUDE and LONGITUDE of the centroid point in decimal degrees in WGS1984 (EPSG:4326) projection.
This dataset contains the inside centroid point layer for the annually released statistical area 2 (SA2) boundaries as at 1 January 2020.
Stats NZ
Geospatial Team
Stats NZ
0508 525 525
geography@stats.govt.nz
Creative Commons Attribution 4.0 International (CC BY 4.0)
eng
boundaries
Version 6.2 (Build 9200) ; Esri ArcGIS 10.3.1.4959
https://datafinder.stats.govt.nz/layer/104426-statistical-area-2-2020-centroid-inside/
SA2s are based on the meshblock pattern. Non-alignment of meshblock to cadastral boundaries is one of a number of reasons for meshblock boundary adjustments. Other reasons include requests from local authorities, Local Government Commission, Electoral Representation Commission, and to make census enumeration processes easier. From the meshblock pattern, higher geographies, including the 2020 SA2 pattern, were dissolved using the dissolve tool in the Arc GIS suite. To derive the SA2 boundaries clipped to the coastline, meshblock polygons were dissolved to exclude meshblocks with a land/water attribute of Inlet or Oceanic.
Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/
license