This dataset contains the inside centroid point layer for the annually released statistical area 2 (SA2) boundaries for 2022 as defined by Stats NZ (the custodian). 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.
|Category||Annual Boundaries > 2022|
|Tags||Centroids, Downloadable Data|
|Metadata||ISO 19115/19139, Dublin Core|
|Data type||Vector point||Feature count||2244|
|Attributes||SA22022_V1_00, SA22022_V1_00_NAME, SA22022_V1_00_NAME_ASCII, LAND_AREA_SQ_KM, AREA_SQ_KM, EASTING, NORTHING, LATITIDE, LONGITUDE|
|Services||Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), data.govt.nz Atom Feed|