ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata
Metadata Standard Version
1.1
Identification Info
Data Identification
Citation
Citation
Title
Landonline: Datum
Date
Abstract
**Please read:** This table is part of the comprehensive Full Landonline Dataset and is designed for use only by data professionals who require the complex version of our property ownership and boundary data for advanced uses. *************************
A Datum is a complete system for enabling Coordinates to be assigned to Nodes. A datum is prescribed by the appropriate authority from which it derives its validity. All Coordinates will be in terms of a Datum. A Datum also provides a spatial standard for the alignment of Reduced Observations via a Datum Calibration. Most Reduced Observations are Datum dependent but there are specific Reduced Observation types which are Datum independent. The Datum entity contains information about the official geodetic Datum used in Land Information NZ databases and other important Datum’s used to spatially reference source data (e.g.. Reduced Observations) or output data or products (e.g.. Coordinates, Digital Cadastral Database, topographic maps, hydrographic charts, etc). The Datum entity includes objects which, strictly, are reference frames rather than datum’s but the distinction is a fine technical point which is of no great consequence. The Datum entity includes vertical reference surfaces such as leveling datum’s, various tidal surfaces including Mean Sea Level, the geoid, datum ellipsoids, etc. For a Datum to maintain accuracy over a significant area it must be geodetic. Examples of non-geodetic datum’s are the Old Cadastral Datums. These do not account for the curvature of the earth and therefore can only maintain accuracy over a limited part of the earth's surface.
Please refer to the [LDS Full Landonline Data Dictionary and Models](https://data.linz.govt.nz/document/95) for detailed metadata about this table.
Purpose
The Full Landonline Dataset is specifically intended to cater for those users who have a requirement to access large volumes of data on a regular basis. The extract allows the recipient to recreate the database held in Landonline. It does not enhance the data in any way, other than to make it available in a standard formats. Entire table views are exported. Consequently, the extracted data covers the entire country, rather then individual areas or pre-defined geographic extents.
Released under Creative Commons Attribution 4.0 International with:
Following Disclaimers: 1. This data is made available through the LINZ Data Service and is based on information contained with Landonline (New Zealand's Official Title and Cadastral System)
Following Attribution: If you publish, distribute or otherwise disseminate this work to the public without adapting it, the following attribution to Land Information New Zealand should be used: 'CC BY 4.0 Land Information New Zealand'
If you adapt this work in any way or include it in a collection, and publish, distribute or otherwise disseminate that adaptation or collection to the public, the following attribution to Land Information New Zealand should be used: 'Contains data sourced from the LINZ Data Service and licensed for reuse under CC BY 4.0.'
If "attribution stacking" problems exist then the requirement to display the above attribution statements is waived and in lieu the attribution statement is to be made in any terms or conditions associated with the work/ product/ application/ etc.
