Coordinate System and Datum Additions for MapInfo Pro 9.0 - MapInfo_Pro - 2023

MapInfo Pro Help
Product type
Software
Portfolio
Locate
Product family
MapInfo
Product
MapInfo > MapInfo Pro
Version
2023
ft:locale
en-US
Product name
MapInfo Pro
ft:title
MapInfo Pro Help
First publish date
1985
ft:lastEdition
2023-09-12
ft:lastPublication
2023-09-12T16:39:16.995000

For the details of these projections, see the Custom Datums section in the Appendices.

Added Bosnia-Herzegovina Coordinate Systems. We have added the following projections to the PRJ file:

  • Bosnia-Herzegovina (Zone 5)
  • Bosnia-Herzegovina (Zone 6)
  • Bosnia-Herzegovina (Zone 7)

Added Luxembourg Projections. We have added the following projection to the PRJ file:

  • Luxembourg 1930 / Gauss\p2169

Added S-JTSK (KROVAK) Coordinate System. We have added a new S-JTSK projection to the .PRJ file to serve the Czech Republic and Slovakia. We have added using new Projection #32 and new Datum #1020:

The last PRJ entry is using the following parameters:

  • Datum:1020 (S-JTSK datum with Ferro Prime meridian)
  • Units:- meters
  • Origin, Longitude: 42.5 degree (East of Ferro)
  • Origin, Latitude: 49.5 degree
  • Standard Parallel: 78.5 degree
  • Azimuth: 30.28813972 degree

Added Swedish Coordinate System. We have added the following projection to the PRJ file.

  • ST 74

Updated EPSG Aliases for Swedish Coordinate Systems. We have added two new EPSG aliases for Swedish coordinate systems to the PRJ file to maintain consistency with the latest update to MapXtreme:

  • EPSG:2326
  • EPSG:3152

Updated Hong Kong EPSG Code. We have added the following EPSG code entry to the PRJ file:

  • Hong Kong 1980 Grid System\p2326

Updated Australian Victorian Coordinate System

We have added the following Australian bounded projections to the PRJ file:

  • VIC VicGrid66 (AGD 66)
  • VIC VicGrid94 (GDA 94)
  • VIC AMG Zone 54 (AGD 66)
  • VIC AMG Zone 55 (AGD 66)
  • VIC MGA Zone 54 (GDA 94)
  • VIC MGA Zone 55 (GDA 94)
  • VIC Longitude/Latitude (AGD 66)
  • VIC Longitude/Latitude (GDA 94)

Updated Danish Coordinate System Entries

We have added the following Danish projections to the PRJ file

  • UTM Zone 32 Euref89\p25832
  • UTM Zone 33 Euref89\p25833
  • UTM Zone 32 (ED 50)\p23032
  • UTM Zone 33 (ED 50)\p23033
  • System 34 Jylland-Fyn\p34003
  • System 34 Sjaelland\p34005
  • System 45 Bornholm\p45001
  • KP2000 Jylland-Fyn\p18401
  • KP2000 Sjaelland\p18402
  • KP2000 Bornholm\p18403

New Irish Transverse Mercator Projection Added

To accommodate the Ordnance Survey projection for Ireland, we have added a projection algorithm to MapInfo Pro. The Irish Transverse Mercator (ITM) is a newly derived GPS-compatible mapping projection that is associated with the ETRS89 and the GRS80 ellipsoids. You can use the new ITM projection to correctly transform data from the Irish Grid to the ITM projection. It involves replacing current datum conversion algorithm between datums 42 (Ireland 1965) and datum 115 (EUREF89\ETRS89) with an algorithm using different datum conversion parameters.

Currently, the MAPINFOW.PRJ entries for the Irish coordinate systems are:

"--- Irish Coordinate Systems ---"
"Irish Transverse Mercator Grid\p29902", 8, 42, 7, -8, 53.5, 1.000035, 
200000, 250000

To use the new conversion algorithm in MapInfo Pro 9.02, use Notepad or another text editor to replace the MAPINFOW.PRJ entries above with the following entries:

"--- Irish Coordinate Systems ---"
"Irish Grid\p29902", 8, 42, 7, -8, 53.5, 1.000035, 200000, 250000
"Irish Transverse Mercator (ITM)\p2157", 8, 115, 7, -8, 53.5, 0.999820, 
600000, 750000

NTv2 Datum Transformation Conversion Added

The National Transformation v. 2 (NTv2) algorithm and grid shift file format, developed by the Geodetic Survey Division of Geomatics Canada, enables you to convert data between the NAD 27 reference system and the NAD 83 reference system; that is, this algorithm allows you to convert these two reference systems between each other. Grid shift files used with the algorithm contain one or more rectangular grids that indicate the coordinate differences between NAD 27 and NAD 83.

The National Transformation was originally designed to convert Canadian data from NAD 27 to NAD 83. The NTv2 grid was an enhancement to compensate for the primary and secondary points that were based on the GRS80 ellipsoid. This format was later adopted for datum conversion in Australia, New Zealand, and Germany.

MapInfo Pro has implemented the general NTv2 algorithm and this maintenance release installs grid shift files for each country to which this transformation applies. These countries and their grid shift file names are specified in the next section.

Countries Served by this Conversion

Below is a description of supported NTv2 transformation grid shift files for each of the countries that use the NTv2 algorithm:

Canada

There are two different grids for Canada. They convert between NAD 1927 or NAD 1927 (Definition 1976) and NAD 1983. The NAD 1927 (Definition 1976) coordinate system is a readjustment of NAD 1927 for Ontario. The grid shift files are:

  • NTV2_0.GSB - used for converting NAD 1927 to NAD 1983
  • MAY76V20.GSB - used for converting NAD 1927 (Definition 1976) to NAD 1983 for Ontario

Detailed information about the algorithm, software and grid shift files can be downloaded from the Natural Resource Canada web site:

http://www.nrcan.gc.ca/maps-tools-and-publications/tools/ geodetic-reference-systems-tools/tools-applications/10925#ntv2

You can also use INTGRID program on this web site that allows you to convert coordinates interactively or to provide a list of points to be converted.

To use the NAD 1927 for Ontario instead of the generic NTv2 grid shift file for all of Canada:

  • Remove or rename the NTV2_0.gsb file in your MapInfo Pro program directory

Australia

The Australian grids convert between either AGD 1966 or AGD 1984 and GDA 1994. It contains two grid shift files:

  • A66_National.gsb - used for converting AGD 1966 to GDA94.
  • National_84.gsb - used for converting AGD 1984 to GDA94

It also contains links to the software that can be used for testing MapInfo implementation.

You can download detailed information about the conversion and grid shift files from the Intergovernmental Committee on Surveying and Mapping (ICSM) web site:

http://www.icsm.gov.au/australian-datums-and-how-move-between-them

To use the AGD 1984 to GDA94 conversion instead of the AGD 1966 to GDA94 grid shift file for all of Australia:

  • Remove or rename the A66_National.gsb file in your MapInfo Pro program directory

New Zealand

New Zealand grid shift files convert from coordinates in the NZGD49 datum to the NZGD2000 datum. The grid shift file is:

  • nzgd2kgrid0005.gsb

You can find detailed information and an online converter on the Land Information New Zealand web site:

http://www.linz.govt.nz/geodetic/

To ignore the grid shift file for all of New Zealand:

  • Remove or rename the nzgd2kgrid0005.gsb file in your MapInfo Pro program directory

Germany

The grid shift file for Germany is:

  • BETA2007.gsb

This file is used for converting from the DHDN datum to the ETRS89 datum. You can find detailed information and an online converter at the Bundesamt fur Kartographie und Geodasie web site:

http://crs.bkg.bund.de/crseu/crs/descrtrans/BeTA/de_dhdn2etrs_beta.php

To ignore the grid shift file for all of Germany:

  • Remove or rename the BETA2007.gsb file in your MapInfo Pro program directory
Note: The NTv2 algorithm and grid shift files for Canada are protected under the following copyright: © 1995 Her Majesty the Queen in Right of Canada, represented by the Minister of Natural Resources.