Search

87 results

Filter search results

Search our site

Search

• Changes to Height Orders

  The Orders of normal-orthometric heights have been updated to reflect the accuracy definitions in the LINZS25005 and LINZS25006 standards.
  Guidance

  • Geodetic

• New Zealand Transverse Mercator 2000 (NZTM2000)

  New Zealand Transverse Mercator 2000 (NZTM2000) is the projection used for New Zealand's Topo50 1:50,000 and other small-scale mapping. It is the recommended projection for use within mainland New Zealand.
  Guidance

  • Geodetic

• Geodetic technical and commissioned reports

  Geodetic technical reports commissioned by or produced for Toitū Te Whenua.
  Guidance

  • Geodetic

• Geodetic workshops

  Selected workshops hosted by Toitū Te Whenua, relating to geodesy in New Zealand.
  Guidance

  • Geodetic

• Distortion grid transformations (NZGD1949 to NZGD2000)

  The transformation grid method can be used to change horizontal coordinates between New Zealand Geodetic Datum 1949 (NZGD1949) and New Zealand Geodetic Datum 2000 (NZGD2000).
  Guidance

  • Geodetic

• 3- and 7-parameter similarity transformations (NZGD1949 to NZGD2000)

  This page lists the transformation factors that are used in the 3-parameter and 7-parameter similarity transformations between New Zealand Geodetic Datum 1949 (NZGD1949) and New Zealand Geodetic Datum 2000 (NZGD2000).
  Guidance

  • Geodetic

• Projection transformation example points

  Example transformations for each of the projections used in New Zealand.
  Guidance

  • Geodetic

• New Zealand Geodetic Datum 2000 (NZGD2000)

  The New Zealand Geodetic Datum 2000 (NZGD2000) is our official geodetic datum, used to define positions in New Zealand and its offshore islands.
  Guidance

  • Geodetic

• Local mean sea level datums (LVDs)

  Many heights around New Zealand have been referenced to a local sea level, or local vertical datum (LVD). In the past this was the most practical method of determining a height reference point, but more robust height references are now available to…
  Guidance

  • Geodetic

• Modernising height data

  The New Zealand Vertical Datum 2016 provides a nationally consistent height reference surface. This is an important tool for planning, consenting, and infrastructure works.
  Guidance

  • Geodetic

• Equations for vertical datum transformations

  The mathematical equations used to convert coordinates between vertical datums.
  Guidance

  • Geodetic

• Coordinate systems used in New Zealand

  We support mapping, surveying, and the use of spatial data by providing coordinate systems for New Zealand and our offshore islands, the Chatham Islands and Antarctica.
  Guidance

  • Geodetic

• New Zealand Vertical Datum 2016 (NZVD2016)

  New Zealand Vertical Datum 2016 (NZVD2016) is the official vertical datum. It is used to define heights in New Zealand and its offshore islands.
  Guidance

  • Geodetic

• New Zealand Geodetic Datum 1949 (NZGD1949)

  New Zealand Geodetic Datum 1949 (NZGD1949) was previously used to define positions on the New Zealand mainland. New Zealand Geodetic Datum 2000 (NZGD2000) superseded NZGD1949 and is now the official datum.
  Guidance

  • Geodetic

• Coordinate and height accuracy

  In New Zealand the accuracy of coordinates and heights is classified using a system of orders. These indicate the expected accuracy of specific components so users can assess the reliability of their geospatial data.
  Guidance

  • Geodetic

• Transformations from CIGD1979 to NZGD2000

  Chatham Islands Geodetic Datum 1979 (CIGD1979) coordinates can be converted to New Zealand Geodetic Datum 2000 (NZGD2000) using a 7-parameter similarity transformation.
  Guidance

  • Geodetic

• Geodetic datum transformation examples (NZGD1949 to NZGD2000)

  Three different datum transformation methods can be used for transformation between NZGD1949 and NZGD2000.
  Guidance

  • Geodetic

• Apply the adjustment using ogr2ogr

  The following process is for applying the adjustment using ogr2ogr.
  Guidance

  • Survey
  • Geodetic

• Kaikoura earthquake coordinate update

  Geodetic Mark Coordinate Update - 1 December 2018.
  Guidance

  • Survey
  • Geodetic

• New Zealand Map Grid (NZMG)

  New Zealand Map Grid (NZMG) was previously used as the projection for topographic 1:50,000 and other small-scale mapping in mainland New Zealand. New Zealand Transverse Mercator 2000 (NZTM2000) replaced NZMG in 2001 and is now the official projection used…
  Guidance

  • Geodetic

• Geodetic specifications and guidelines

  Find specifications, templates and guidelines for submitting geodetic data to Toitū Te Whenua.
  Guidance

  • Geodetic

• NZGD2000: A semi-dynamic datum

  New Zealand Geodetic Datum (NZGD2000) is a semi-dynamic datum. This means that the effects of plate tectonics are considered as part of the processes and frameworks when determining a coordinate for a position. However, the impact might not be immediately…
  Guidance

  • Geodetic

• Convergence, scale factors and declination

  When coordinates are transformed from a curved surface to a flat map, some of the accuracy in the coordinate is lost because all projections have some degree of distortion. Convergence, scale factors and declination can reduce the distortion and give a…
  Guidance

  • Geodetic

• Chatham Islands Geodetic Datum 1979 (CIGD1979)

  Chatham Islands Geodetic Datum 1979 (CIGD1979) was previously used to define positions on the Chatham Islands. New Zealand Geodetic Datum 2000 (NZGD2000) is now the official datum used in the Chatham Islands, superseding CIG1979 from March 1998.
  Guidance

  • Geodetic

• Chatham Islands Geodetic Datum 1971 (CIGD1971)

  Chatham Islands Geodetic Datum 1971 (CIGD1971) was previously used to define positions on the Chatham Islands. It was replaced in 1981 by Chatham Islands Geodetic Datum 1979 (CIGD1979), and both were superseded by New Zealand Geodetic Datum 2000 (NZGD2000…
  Guidance

  • Geodetic

• Changes to Control Mark Orders

  The Orders of control marks have been updated to reflect the accuracy definitions in the LINZS25005 and LINZS25006 standards.
  Guidance

  • Geodetic

• World Geodetic System 1984 (WGS84)

  The World Geodetic System 1984 (WGS84) is a global datum, used for determining positions on the Earth's surface. The WGS84 is a reference system used by the satellite navigation systems like GPS and is used in various mapping applications.
  Guidance

  • Geodetic

• New Zealand Geodetic Datum 1949 ‘D’ Coordinates

  New Zealand Geodetic Datum 1949 (NZGD1949) ‘D’ coordinates were computed and adjusted in terms of New Zealand Geodetic Datum 2000 (NZGD2000) and then transformed into NZGD1949 using a grid transformation.
  Guidance

  • Geodetic

• Determining local vertical datum (LVD) heights

  The nature of the local vertical datum (LVD) networks can lead to inconsistencies, depending on the source of the heights used. This can create challenges and is why New Zealand Vertical Datum 2016 (NZVD2016) should be used whenever possible.
  Guidance

  • Geodetic

• NZVD2016 information for councils

  The New Zealand Vertical Datum 2016 (NZVD2016) was introduced to replace the various local height datums used throughout the country. It enables the consistent collection and seamless exchange of heights across New Zealand. Older datums are still in use…
  Guidance

  • Geodetic

• New Zealand Continental Shelf Lambert Conformal 2000 (NZCS2000)

  New Zealand Continental Shelf Lambert Conformal 2000 (NZCS2000) projection is used for mapping and representing spatial data covering the New Zealand continental shelf.
  Guidance

  • Geodetic

• Coordinate and height orders

  This page contains information on the orders that define the accuracy of coordinates and heights in New Zealand.
  Guidance

  • Geodetic