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PC Software Download - GEOID03 |
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GEOID03
[Jan, 2004]
Description
For working with the GEOID03 model, two FORTRAN programs are provided
as source code (INTG.FOR and XNTG.FOR) and as compiled executables for
both Sun Unix (INTG and XNTG) and IBM PC (INTG.EXE and XNTG.EXE)
platforms. INTG will interpolate geoid heights from data files using
user-provided coordinates. XNTG 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 GEOID03, the INTG executable and at least one data file must be
downloaded. You need only to select those data files that cover your region,
and the program will recognize which files are present. Select one or more of
the data files either by using the graphical or data interfaces.
Due to numerous requests, the binary formats of the eight
data files have now been switched to the native format of Intel based PCs
(little-endian). Users desiring IEEE Std. 754 binary format should process
the desired files through XNTG (in a Unix environment) and select option 2.
The user should select the default spatial extents for the output file. Give
the output file a unique name and then change it to the input file name after
the XNTG program is complete. The resulting file will cover the same range as
the original file but will be byte-swapped. Repeat as necessary for the
desired number of files.
Information
Programs
- FORTRAN source code INTG.FOR (Version 1.3, Dec 24, 2003)
- Unix (Sun)binary executable INTG (Version 1.3, Dec 24, 2003)
- PC Binary executable INTG.EXE (Version 1.3, Dec 24, 2003)
- FORTRAN source code XNTG.FOR (Version 1.1, Dec 24, 2003)
- Unix (Sun)binary executable XNTG (Version 1.1, Dec 24, 2003)
- PC Binary executable XNTG.EXE (Version 1.1, Dec 24, 2003)
Graphical Interface- click on the desired image grid to download a binary file
Data (non-graphical interface)
- Binary Grids (all are 1141 columns by 1081 rows and are 4,933,728 bytes in size)
- Compressed ASCII grids
- Grid #1 (58 - 40 N & 230 - 249 E, size: 3,886,292 bytes)
- Grid #2 (58 - 40 N & 247 - 266 E, size: 3,958,149 bytes)
- Grid #3 (58 - 40 N & 264 - 283 E, size: 3,761,091 bytes)
- Grid #4 (58 - 40 N & 281 - 300 E, size: 4,116,917 bytes)
- Grid #5 (42 - 24 N & 247 - 266 E, size: 3,852,387 bytes)
- Grid #6 (42 - 24 N & 247 - 266 E, size: 3,967,923 bytes)
- Grid #7 (42 - 24 N & 264 - 283 E, size: 3,747,351 bytes)
- Grid #8 (42 - 24 N & 281 - 300 E, size: 3,948,808 bytes)
Disclaimer
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For more information contact NGS Information
Services:
by e-mail,
or call (301) 713-3242, Monday-Friday, 7:00 AM - 4:30 PM eastern time.
For questions about this page or downloading
problems,
contact the
Webmaster.
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http://www.ngs.noaa.gov/PC_PROD/GEOID03/index.shtml |
Last Modified:
July 16, 2004. |
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