Brief Description of the Current Version Development Tool Description Specification Function coordtrans3d() as example List of coordinate and reference systems
NTv2 support with GeoDLL Useage of Digital Elevation Models with GeoDLL Screenshots Download GeoDLL test version Prices GeoDLL full version Order GeoDLL full versionNTv2 means "National Transformation Version 2". The NTv2 method uses binary files to perform accurate datum shifts from one geodetic reference system to an other. A NTv2 file contains the differences between the two reference systems as geographic seconds in a grid. A bilinear interpolation is used to calculate the exact coordinates for a point in the target reference system.
NTv2 is designed to check multiple grids for the most accurate shift information. A NTv2 file contains a low density base grid (parent). Certain areas such as cities can have high density local sub grids. The sub grids overlay portions of the base grid. If a point is within one of the high density sub grids, NTv2 will use the high density grid, otherwise, the point falls through to the low density grid.
A description of the NTv2 algorithm can be found in the following sources:
NTv2 für Deutschland, 2006.
Here the NTv2 binary files are listed, which are supported by the geodetic Library GeoDLL and the program TRANSDAT.
In the second line always the original source is shown, from which the original NTv2 file can be downloaded and information about the associated geodetic reference systems are given.
In the third line is a link, from which the NTv2 file can be download direct from the KilletSoft server.
It is recommended to use the original NTv2 files from the original sources, because the actuality of the files stored on the KilletSoft server is not guaranteed.
Important note:
If you want to use the here listed NTv2 files, you must necessarily note the terms and conditions of their authors!
All rights and liabilities, resulting from the use of the data, bears solely the user!
KilletSoft does not guarantee the accuracy of the data!
Intergovernmental Committee on Surveying & Mapping. Download A66_NAT
Intergovernmental Committee on Surveying & Mapping. Download A84_NAT
Natural Resources Canada: Canadian Spatial Reference System - NTv2. Download NTV2_0
Paul Kelly: Creation of NTv2 Grid File for France. Download FRANCE
Bundesamt für Kartographie und Geodäsie. Download BeTA2007
Paul Kelly: OSTN02 in NTv2 format for OSGB36<-->ETRS89. Download ENGLAND
Paul Kelly: OSTN02 in NTv2 format for OSGB36<-->ETRS89. Download SCOTLAND
Land Information New Zealand: GD2000it Download. Download NZGD2KGR
Luís Carlos Madeira: PT73_E89. Download PT73_E89
Luís Carlos Madeira: PTLX_E89. Download PTLX_E89
Bundesamt für Landestopographie swisstopo: CHENyx06. Download CHENYX06
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In order that you always are well informed about our company, we write actual news, current information and special offers here into this column.
Price reduced!
Since February we have a new contract with our data supplier.
The prices for spatial data on street and building levels have been reduced substantially.
The up to 65 percent cheaper prices we pass directly to our customers!
New product BetaDLL
BetaDLL is a programming library with coordinate transformations and NTv2 datum shifts with the German BeTA2007 standard for calling from own applications or the use as C++ source code.
Read the Press Release ...
Free update by purchasing Geo Data German Admin
Geo Data German Admin are updated every year in March / April.
In order that you do not have any disadvantage when you acquire the data now before the annual updating, you get a free update.
WINDOWS© 7 compatible
Our software has received the certificate "WINDOWS© 7 compatible".
So it complies with the compatibility standards of the Microsoft operating systems WINDOWS© 7.
INSPIRE©
GeoDLL and TRANSDAT supports Europe-wide the ETRS89 coordinate systems proposed by INSPIRE©.
GK --> UTM with BeTA2007
The convertion of your geodata from Gauss-Kruger to UTM with BeTA2007 - Its so easy!
Read the Worksheet and the Press Release ....
UTM coordinates
Display Formats of UTM Coordinates - How to Deal with Them?
Read the Worksheet and the Press Release ....
Snow and Wind Load Zones
The Snow and Wind Load Zones of all German towns and cities are available in a new data base.
Read the Press Release ...
Nature Area Classification
The product "GeoData German Admin" has been enhanced with two new data tables containing the "Nature Area Classification" and the Landscapes.
This will allow associating nature area and landscape information to all localities.
Read the Press Release ...
GeoDLL supports 3D coordinate- transformations
After our Dynamic Link Library has become super fast by recoding to C++, GeoDLL now is able to calculate 3D coordinate transformations considering the ellipsoidical heights.
As well calculations with cartesian coordinates are possible now.
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