GEOID99 (PC format) Download PAGE
The executable programs (INTG.EXE, WINTG.EXE and XNTG.EXE) were compiled for use on
an IBM-compatible PC running Microsoft Windows (95/98/NT/ME).
INTG.EXE and WINTG.EXE will interpolate geoid heights from data files using
user-provided coordinates. The INTG.EXE program provides a command line
interface and runs in a Command Window. WINTG provides a Windows user
interface. The mathematical computations for the two programs are identical.
The XNTG.EXE program will extract sub-grids
from the binary data files, as well as convert back and forth between binary
and ASCII, or just give statistics about a data file.
To use GEOID99,either
INTG.EXE or WINTG.EXE and at least one data file must be downloaded. You
need only to select those data files that cover your region, and INTG.EXE
or WINTG.EXE will recognize which files are present.