	$Id: README.mgd77,v 1.5 2004/08/27 18:07:05 pwessel Exp $

README file for GMT supplemental mgd77 programs

AUTHORS:	Paul Wessel and Michael Chandler
DATE:		18-AUG-2004
INSTALL INFO:	The mgd77 directory should install under GMT/src

	These programs are intended for use with the marine geophysical
data files known as MGD77 files.  These data files are NOT supplied with
GMT; they are the MGD-77 standard exchange format files provided by the
National Geophysical Data Center*.  The programs provide similar function-
ality to those of the mgg supplement but uses the actual MGD77 data files.
The following is a list of the programs and a short description of what
they do:

	mgd77list	A data extractor for .mgd77 files
	mgd77info	An information extractor for .mgd77 files
	mgd77path	Gets the full pathnames for .mgd77 files
	mgd77track	A track plotter for .mgd77 files

man-files for all the above programs can be found in the manl subdirectory.

Note that the functionality provided by the mgg supplement's gmt2bin,
binlegs and getlegs have now been generalized to any track data by the
tools in the x2sys package.

The support file mgd77_paths.txt is put in the 
GMT/share/mgd77 subdirectory directory.

To install these programs, simply type

	make install

Uses must have the environmental variable GMTHOME set which they
are likely to have if they are using GMT.

You may copy the manl/*.man files to /usr/man/manl/*.l if you wish.

* Available on CD-ROM from NGDC (www.ngdc.noaa.gov).
