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• Datum and Projection Transformations - LINZG25703

  This fact sheet explains how to convert geographic coordinates to and from the Transverse Mercator and Lambert Conformal Conic projections.
  Resource

  • Geodetic

• National Reference Frame

  The NRF provides the connection between national geodetic and vertical datums, and international reference systems.
  Page

  • Geodetic

• Cadastral Vertical Control Network

  The CVN provides the street-level control marks that are used by surveyors to connect cadastral surveys to the official vertical datum (NZVD2016).
  Page

  • Geodetic

• Survey Control Networks

  New Zealand’s survey control system comprises physical control marks and information about them to enable the coordinates of other points to be determined. The control system is segmented into six control networks which provide control marks for specific…
  Page

  • Geodetic

• Instructions for carrying out online height conversions

  How to transform heights between vertical datums.
  Guidance

  • Geodetic

• A Proposal for Geodetic Datum Development

  This document is issued by the Office of Surveyor-General to document proposals for geodetic datum development.
  Resource

  • Geodetic

• Proposal for Datum 2000 Meridional Circuits

  This document is issued by the Office of the Surveyor-General to: document proposals for development of NZGD2000 meridional circuits; obtain approval for the implementation of NZGD2000 meridional circuits.
  Resource

  • Geodetic

• A Proposal for Vertical Datum Development in New Zealand

  This report looks at the options for vertical datum development in New Zealand.
  Resource

  • Geodetic

• New Zealand Geodetic Operations 1995-98

  This report has been compiled by the Surveyor-General, Land Information New Zealand, on behalf of the Geosciences Standing Committee of the Royal Society of New Zealand for the General Assembly of the International Union of Geodesy and Geophysics,…
  Resource

  • Geodetic

• Transformation Parameters from Chatham Islands 1979 to NZGD2000

  Land Information New Zealand has implemented a new national geodetic datum, New Zealand Geodetic Datum 2000 (NZGD2000). NZGD2000 replaces Chatham Islands 1979 datum and New Zealand Geodetic Datum 1949 (NZGD49).
  Resource

  • Geodetic

• Realisation of Ross Sea Region Geodetic Datum 2000

  In November 2000 a new datum, Ross Sea Region Geodetic Datum 2000 (RSRGD2000) was realised for the Ross Island area of the Ross Sea Region of Antarctica. This report details the parameters for, and realisation of, RSRGD2000.
  Resource

  • Geodetic

• Investigations in support of PositioNZonLine

  With the planned release of the PositioNZ-PP on-line GPS procession tool, LINZ requires updated models to predict forward the position of each of the continuous GPS reference stations of the PositioNZ network and transformation parameters between NZGD2000…
  Resource

  • Geodetic

• Guidelines for CORS Data Supply

  This guideline outlines the technical requirements for supply of GNSS Continuously Operating Reference Stations (CORS) metadata and RINEX (Receiver Independent Exchange Format) data files to Toitū Te Whenua.
  Resource

  • Data
  • Geodetic

• SNAP Guidelines for GNSS Geodetic Control – CSV files

  This guideline provides instructions for the use of CSV (Comma-separated values) in SNAP (Survey Network Adjustment Package). SNAP is a suite of programs for adjusting the coordinates in a survey network to best fit the observed data.
  Resource

  • Geodetic

• Specifications for Geodetic Contract Deliverables

  This specification is an extract of the sections titled ‘Contract Deliverables’ from the Specifications for Geodetic Physical Network Version 1.13 published in November 2006 and Specifications for Geodetic Control Survey Version 1.3 published in November…
  Resource

  • Geodetic

• Geospatial career profiles

  Check out profiles of people who have moved from overseas to work in the geospatial industry in New Zealand
  Page

  • Geodetic

• SNAP and CONCORD downloads

  Information about the SNAP software suite, and how to download and install the SNAP and CONCORD programs.
  Page

  • Geodetic

• Providing survey mark feedback

  We welcome feedback about the safety, maintenance, coordinate or height information of any survey mark. Let us know if marks have been damaged or destroyed, and suggest where new marks should be installed.
  Page

  • Geodetic

• Tidal level information for surveyors

  Determination of MHWSThere is no definitive method for establishing mean high-water springs (MHWS) boundaries – it requires a tailored approach that considers factors like hydraulic gradient, land type and the survey accuracy that is required.
  Guidance

  • Geodetic

• Darwin Glacier Lambert Conformal 2000 Projection (DGLC2000)

  The Darwin Glacier Lambert Conformal 2000 projection (DGLC2000) was replaced by the McMurdo Sound Lambert Conformal 2000 projection (MSLC2000) on 21 March 2011.
  Guidance

  • Geodetic

• New Zealand Geodetic Datum 1949 (NZGD1949) orders

  New Zealand Geodetic Datum 1949 (NZGD1949) was a horizontal datum. Its coordinates were classified into orders according to observation type and survey network.
  Guidance

  • Geodetic

• Pre-2010 normal-orthometric height orders

  Before May 2010, normal-orthometric heights were categorised using orders based on observation method and survey significance. This order framework was replaced by the Standard for the Geospatial Accuracy Framework (LINZS25005) and Standard for Tiers,…
  Guidance

  • Geodetic

• Geodetic datum conversions

  Coordinates can be transformed between geodetic datums by using either a transformation grid or a similarity transformation. This section includes examples of transforming to and from New Zealand Geodetic Datum 2000 (NZGD2000).
  Guidance

  • Geodetic

• Transformations between ITRF and NZGD2000

  Coordinate transformations between the International Terrestrial Reference Frame (ITRF) and New Zealand Geodetic Datum 2000 (NZGD2000).
  Guidance

  • Geodetic

• New Zealand Geodetic Datum 2000 ellipsoidal heights

  New Zealand Geodetic Datum 2000 (NZGD2000) coordinates include an ellipsoidal height measured using GNSS (global navigation satellite system) observations. Ellipsoidal heights often need to be converted to a vertical datum.
  Guidance

  • Geodetic

• New Zealand Geodetic Datum 2000 deformation model

  The New Zealand Geodetic Datum 2000 (NZGD2000) deformation model is used to adjust coordinates for ongoing crustal deformation. It takes into account tectonic motion and some major earthquakes to ensure that coordinates of survey marks and other features…
  Guidance

  • Geodetic

• Computation of the vertical datum relationship grids for NZVD2016

  Vertical datum relationship grids allow the transformation of local vertical datum heights to NZVD2016. These transformation grids were calculated by using observation points with both an ellipsoidal and a normal-orthometric height.
  Guidance

  • Geodetic

• Vertical datum relationship grids

  Vertical datum relationship grids are reference surfaces that can be used to transform heights between the 13 official local vertical datums and New Zealand Vertical Datum 2016 (NZVD2016).
  Guidance

  • Geodetic

• Guideline for the provision and maintenance of the New Zealand survey control system - LINZG25704

  The Surveyor-General has issued a standard that specifies the requirements for the New Zealand survey control system (LINZS25003).
  Resource

  • Geodetic

• Reference ellipsoids

  An important feature of a geodetic datum is the reference surface. The reference surface approximates the shape of the Earth, so that geodetic coordinates can be located on a curved surface. The most common reference surface for geodetic datums is an…
  Guidance

  • Geodetic

• Gravity and the geoid

  Geoids and quasigeoids are reference surfaces that accurately represent the Earth’s shape and gravitational field. By collecting gravity data (which differs with latitude, elevation, geology and time), gravity field models are created to compute the geoid…
  Guidance

  • Geodetic

• Projection conversions

  Coordinates can be transformed between projections within the same datum, or between projections using different datums.
  Guidance

  • Geodetic