Group NTv2 Tools



The group "NTv2 Tools" contains functions that allows the manipulation and data retrieval from NTv2 ASCII grid files and NTv2 binary files.


Characteristics of the function group

ASCII grid files (.gsa) and binary grid files (.gsb)
Conversion of ASCII grid files to binary grid files
Conversion of binary grid files to ASCII grid files
Copy of NTv2 grid file areas to  new binary files
Supplement of a NTv2 binary file with Polygonal Validity Scopes
Determining the parameters of a NTv2 grid file
Download of many NTv2 files from the KilletSoft website
Links to NTv2 providers on the KilletSoft website
HARN grid files of the U.S. supported as equivalent NTv2 grid files
Free use of some NTv2 files, which otherwise are available for a fee
Access to NTv2 files, which are specially licensed for KilletSoft


"NTv2 Tools" function group

Information about the supported NTv2 grid files

Calculation accuracy with NTv2

Polygonal Validity Scopes

Function convntvascii2bin() - Convert a NTv2 ASCII file to a binary file

Function convntvbin2ascii() - Convert a NTv2 binary file to an ASCII file

Function convntvbin2area() - Copies an area of a NTv2 grid file to a new binary file

Function convntvbin2polyvalid() - Supplement of NTv2 binary files with Polygonal Validity Scopes

Function getntvgridcount() - Determination of the count of subgrids contained in a NTv2 file

Function getntvgridheader() - Determination of the header parameter of a NTv2 subgrid

Function getntvheader() - Determination of the header parameter of a NTv2 file