Download geodetic software
This section provides free geodetic Windows software for download.
Check the conditions for downloads. Alternatively, check online conversions or other LINZ datasets, downloads and software.
Contents
SNAP & CONCORD downloads
SNAP is a programme for adjusting the coordinates of stations in a survey network to best fit the observed data. CONCORD is part of the SNAP software suite, and converts coordinates between New Zealand coordinate systems. more...
NZ Map Reference Converter
New Zealand Map Reference Converter (NZMapConv) is a programme for converting map references between the old NZMS260 map series and the new NZTopo50 map series. It can also be used for converting between other common projections and datums. more...
New Zealand Transverse Mercator 2000
- LINZS25002 - Standard for New Zealand Geodetic Datum 2000 Projections
- LINZG25702 Projections fact sheet - a summary of the requirements of NZTM2000
NZGD2000 - NZTM2000 source code
nztm (ZIP 4KB) (zip 4KB)
Last updated 22 February 2007. Source code in the C programming language for converting NZGD2000 to NZTM2000 projection.
New Zealand Map Grid
NZGD1949 - NZMG source code
nzmg (ZIP 3KB) (zip 4KB)
Last updated 22 February 2007. Source code in the C programming language for converting NZGD1949 to NZMG projection.
New Zealand Geoid 2009
NZGeoid09 is available for download in two formats, covering four different spatial extents:
- the entire computation area (160° E - 170° W; 25°S - 60°S)
- New Zealand (165° E - 180° E; 34°S - 48°S)
- the North Island (172° E - 179° E; 34°S – 42°S)
- the South Island, Stewart Island / Rakiura (166° E - 175° E; 41°S - 48°S).
NZGeoid09 - Full computation area - ASCII grid
nzgeoid09_sid.zip (ZIP 9MB) (zip 9.2MB)
Last updated 21 September 2009
NZGeoid09 - Full computation area - coordinate triplets
nzgeoid09_lln.zip (ZIP 20MB) (zip 20.2MB)
Last updated 21 September 2009
NZGeoid09 - New Zealand - ASCII grid
nzgeoid09_nz_sid.zip (ZIP 2MB) (zip 1.8MB)
Last updated 21 September 2009
NZGeoid09 - New Zealand - coordinate triplets
nzgeoid09_nz_lln.zip (ZIP 4MB) (zip 3.6MB)
Last updated 21 September 2009
NZGeoid09 - North Island - ASCII grid
nzgeoid09_ni_sid.zip (ZIP 496KB) (zip 495KB)
Last updated 21 September 2009
NZGeoid09 - North Island - coordinate triplets
nzgeoid09_ni_lln.zip (ZIP 965KB) (zip 964KB)
Last updated 21 September 2009
NZGeoid09 - South Island, Stewart Island/Rakiura - ASCII grid
nzgeoid09_si_sid.zip (ZIP 553KB) (zip 553KB)
Last updated 21 September 2009
NZGeoid09 - South Island, Stewart Island/Rakiura - coordinate triplets
nzgeoid09_si_lln.zip (ZIP 1MB) (zip 1.1MB)
Last updated 21 September 2009
New Zealand Geoid 2016
Information on how to download NZGeoid2016:
New Zealand Quasigeoid 2016 (NZGeoid2016)
See our Medium blog for more information on how to use NZGeoid2016 to reproject point clouds:
NZGD1949 & NZGD2000 horizontal coordinates distortion grid
Download the distortion grid file and other information available regarding the grid transformation.
- LINZS25000 - Standard for New Zealand Geodetic Datum 2000
- LINZG25700 Fact sheet - a summary of the key information in LINZS25000
- GD2000it is the software that LINZ provides to convert coordinates between NZGD1949 and NZGD2000 using the distortion grid.
ASCII version of the distortion grid
nzgd2kgrid9911 (ZIP 284KB) (zip 284KB)
Last updated 20 November 1999.
NZGD2000 - NZGD1949 source code
linzgrid-v1-3
Last updated4 February 2014. Source code in the C programming language that implements the conversion between NZGD2000 and NZGD1949 using the NTv2 ASCII distortion grid file.
This code can be incorporated into custom software. Two files are provided - linzgrid.c and linzgrid.h. Comments in the linzgrid.c file detail how it is used. To use this you will also need to download the ASCII version of the distortion grid.
con_check software download
con_check is used by the National Geodetic Office (NGO) for quality assurance and validation of contracted Geodetic Deliverables. This tool has been developed for in-house processing and is unsupported by LINZ. con_check and the content of this guideline is provided to NGO contractors for information only, it has not been specifically customised for use outside of the LINZ network.
con_check
con_check (zip 530KB)
Last updated 24 Oct 2014.
Conditions for downloads
Download and use of these software applications is taken to be acceptance of the following conditions:
- Land Information New Zealand (LINZ) does not offer any support for this software.
- The software is provided "as is" and without warranty of any kind. In no event shall LINZ be liable for loss of any kind whatsoever with respect to the download, installation and use of the software.
- The software is designed to work with MS Windows. However, LINZ makes no warranty regarding the performance or non-performance of the software on any particular system or system configuration.