x2sys_get - Get track listing from track index databases
x2sys_get -TTAG [ -Fflags ] [ -Rwest/east/south/north ] [ -S ] [ -V ]
x2sys_get will return the track data files that match the given
requirements. You may choose a geographic region and optionally ask
only for tracks that meet certain data criteria.
TAG The unique name of this data type system.
No space between the option flag and the associated arguments
-F Give a comma-separated list of column names as defined in the
definition file. [Default is all data columns].
-R xmin, xmax, ymin, and ymax specify the Region of interest. For
geographic regions, these limits correspond to west, east,
south, and north and you may specify them in decimal degrees or
in [+-]dd:mm[:ss.xxx][W|E|S|N] format. Append r if lower left
and upper right map coordinates are given instead of wesn. The
two shorthands -Rg -Rd stand for global domain (0/360 or
-180/+180 in longitude respectively, with -90/+90 in latitude).
For calendar time coordinates you may either give relative time
(relative to the selected TIME_EPOCH and in the selected
TIME_UNIT; append t to -JX|x), or absolute time of the form
[date]T[clock] (append T to -JX|x). At least one of date and
clock must be present; the T is always required. The date string
must be of the form [-]yyyy[-mm[-dd]] (Gregorian calendar) or
yyyy[-Www[-d]] (ISO week calendar), while the clock string must
be of the form hh:mm:ss[.xxx]. The use of delimiters and their
type and positions must be as indicated (however, input/output
and plotting formats are flexible).
-S Strip off the filename suffix when reporting.
-V Selects verbose mode, which will send progress reports to stderr
[Default runs "silently"].
To find all the tracks associated with the tag MGD77, restricted to
occupy a certain region in the south Pacific, and have at least free
air anomalies and bathymetry, try
x2sys_get -V -TMGD77 -R180/240/-60/-30 -Ffaa,top
GMT4.0 1 Oct 2004 X2SYS_GET(GMTMANSECTION)
Man(1) output converted with