gmtlegs - Find cruises in a given region
gmtlegs -Rwest/east/south/north [ -G ] [ -M ] [ -T ] [ -L ] [ -V ]
gmtlegs will report the name of all the cruises that happened to be
wholly or partially inside the specified region. As an option, only
those cruises that collected a certain type of data can be reported.
-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).
No space between the option flag and the associated arguments
-G Report cruises that collected Gravity data. [Default is any
-M Report cruises that collected Magnetics. [Default is any data].
-T Report cruises that collected Topography. [Default is any data].
-L Long output, i.e. cruisenames and data types available. [Default
is cruisenames only].
-V Selects verbose mode, which will send progress reports to stderr
[Default runs "silently"].
To find all cruises around Hawaii that collected gravity and topogra-
gmtlegs -R-162/-152/18/25 -G -T > hawaii_gt.legs
To find all cruises with magnetics:
gmtlegs -R0/360/-90/90 -M > all_m.legs
ping Tools Released, http: American Geophysical Union.
Wessel, P., and W. H. F. Smith, 1991, Free Software Helps Map and Dis-
play Data, EOS Trans., AGU, 72 (41), p. 441.
GMT4.0 1 Oct 2004 GMTLEGS(GMTMANSECTION)
Man(1) output converted with