Find out about current coordinate orders.
Until May 2010, New Zealand Geodetic Datum 2000 (NZGD2000) (https://linz.govt.nz/data/geodetic-system/datums-projections-and-heights/geodetic- datums/new-zealand-geodetic-datum-2000-nzgd2000) and Ross Sea Region Geodetic Datum 2000 (RSRGD2000) (https://linz.govt.nz/data/geodetic-system/datums- projections-and-heights/geodetic-datums/ross-sea-region-geodetic-datum) coordinates were described by a system of orders based on coordinate observation and the role the survey mark played in the geodetic control and cadastral survey networks.
New Zealand Geodetic Datum 2000
Ross Sea Region Geodetic Datum 2000
- Orders 0 to 5 had different horizontal and vertical accuracy tolerances, while for Orders 6 to 10 the horizontal and vertical tolerances were the same.
- Orders 0 to 7 were survey accurate and were defined by the relative accuracy between marks.
- Order 6 was applied to Landonline survey accurate cadastral traverse, and order 7 was applied to Landonline survey accurate boundaries.
- The accuracy for orders 8 to 10 was indicative only.
- Orders 6 to 7 were not used for marks in the RSRGD2000.
This order scheme was replaced in 2010 by the Standard for the Geospatial Accuracy Framework (LINZS25005) and Standard for Tiers, Classes and Orders of LINZ Data (LINZS25006).
Standard for the Geospatial Accuracy Framework
Standard for Tiers, Classes, and Orders of LINZ Data
| Order | Description | Accuracy (95% CI) |
|---|---|---|
| 0 | International Control Network | Horiz 0.003m + 0.01ppm Vert 0.003m + 0.03ppm |
| 1 | National Control Network | Horiz 0.003m + 0.1ppm Vert 0.003m + 0.3ppm |
| 2 | Regional Control Network | Horiz 0.003m + 1ppm Vert 0.01m + 3ppm |
| 3 | Local Control Network | Horiz 0.01m + 3ppm Vert 0.01m + 10ppm |
| 4 | Urban Control Network | Horiz 0.01m + 10ppm Vert 0.01m + 30ppm |
| 5 | Cadastral Control (includes new control; resurveyed control; adopted and re-adjusted NZGD1949 and Old Cadastral control traverses) | Horiz 0.01m + 30ppm Vert 0.01m + 100ppm |
| 6 | Cadastral traverses that comply with the Surveyor-General's Rules for Cadastral Survey | 0.02m + 100ppm |
| 7(i) | Class I cadastral boundaries and traverses that fail Order 6 tests | 0.04m + 100ppm |
| 7(ii) | Class II cadastral boundaries, Class I boundaries that fail Order 7(i) tests and traverses that fail Order 6 and 7(i) tests | 0.10m + 100ppm |
| 7(iii) | Class III cadastral boundaries, Class II boundaries that fail Order 7(ii) tests, Class I boundaries that fail Order 7(i) and 7(ii) tests and traverses that fail Order 6, 7(i) and 7(ii) tests | 0.25m + 100ppm |
| 8 | Transformed NZGD1949 control, Class IV cadastral data, Class I, II and III boundaries and traverses that fail Orders 6, 7(i), 7(ii) and 7(iii) tests, converted higher accuracy DCDB data (source code 1) | 0.5 m (nominal) |
| 9 | Converted medium accuracy DCDB data (source codes 2-10) | 5m (nominal) |
| 10 | Transformed Order 6 NZGD1949 control, converted low accuracy DCDB data (source codes 11,12) | 50m (nominal) |