mgd77path(1) GMT mgd77path(1)
NAME
mgd77path - Return paths to MGD77 cruises and directories
SYNOPSIS
mgd77path NGDC-ids [ -A[-] ] [ -D ] [ -Iignore ] [ -V[level] ]
Note: No space is allowed between the option flag and the associated
arguments.
DESCRIPTION
mgd77path returns the full pathname to one or more MGD77 files. The
pathname returned for a given cruise may change with time due to
reshuffling of disks/subdirectories.
REQUIRED ARGUMENTS
NGDC-ids
Can be one or more of five kinds of specifiers:
1. 8-character NGDC IDs, e.g., 01010083, JA010010etc., etc.
2. 2-character agency codes which will return all cruises from
each agency.
3. 4-character <agency><vessel> codes, which will return all
cruises from those vessels.
4. =list, where list is a table with NGDC IDs, one per line.
5. If nothing is specified we return all cruises in the data
base.
(See mgd77info -L for agency and vessel codes). If no file
extension is given then we search for files with one of the four
known extensions. The search order (and the extensions) tried
is MGD77+ (a.nca), MGD77T (a.m77ta), MGD77 (a.mgd77a ) and plain
text file (a.data). Use -I to ignore one or more of these file
types). Cruise files will be looked for first in the current
directory and second in all directories listed in
$MGD77_HOME/mgd77_paths.txt [If $MGD77_HOME is not set it will
default to $GMT_SHAREDIR/mgd77].
OPTIONAL ARGUMENTS
-A[-] Display the full path to each cruise [Default]. Optionally,
append - which will list just the cruise IDs instead.
-D Instead of cruise listings, just show the directory paths cur-
rently used in the search.
-Iignore
Ignore certain data file formats from consideration. Append
a|c|m|t to ignore MGD77 ASCII, MGD77+ netCDF, MGD77T ASCII, or
plain tab-separated ASCII table files, respectively. The option
may be repeated to ignore more than one format. [Default ignores
none].
-V[level] (more a|)
Select verbosity level [c]. Reports the total number of cruises
found.
-^ or just -
Print a short message about the syntax of the command, then
exits (NOTE: on Windows just use -).
-+ or just +
Print an extensive usage (help) message, including the explana-
tion of any module-specific option (but not the GMT common
options), then exits.
-? or no arguments
Print a complete usage (help) message, including the explanation
of all options, then exits.
EXAMPLES
To obtain pathnames for cruises 01010008 and 01010007, run
gmt mgd77path 01010008 01010007
To obtain pathnames for cruises 01010008 and 01010007, but only if
there are MGD77+ version in netCDF, run
gmt mgd77path 01010008 01010007 -Ia -It
To see the list of active directories where MGD77 files might be
stored, run
gmt mgd77path -D
SEE ALSO
gmt(1), mgd77info(1), mgd77list(1), mgd77manage(1), mgd77track(1)
REFERENCES
The Marine Geophysical Data Exchange Format - MGD77, see
*http://www.ngdc.noaa.gov/mgg/dat/geodas/docs/mgd77.txt*.
COPYRIGHT
2017, P. Wessel, W. H. F. Smith, R. Scharroo, J. Luis, and F. Wobbe
5.4.2 Jun 24, 2017 mgd77path(1)
gmt5 5.4.2 - Generated Thu Jun 29 14:49:46 CDT 2017