Provided by: gmt_4.5.11-1build1_amd64 bug


       mgd77info - Get information about MGD77[+] files


       mgd77info NGDC-ids [ -C[m|e] ] [ -E[m|e] ] [ -Iignore ] [ -Mf[item]|r|e|h ] [ -L[v] ] [ -V


       mgd77info reads <legid>.[mgd77|nc] files and produces a single record of information about
       each  cruise  specified.   The  information  includes beginning and end times, total track
       distances in km, longitude and  latitude  range,  and  the  total  number  of  geophysical
       observations.   Optionally,  choose  instead  to  see  the original MGD77 header meta-data
       section or its individual members.
       If you need to know which tracks are crossing through a given region  and  what  kinds  of
       geophysical  observations are available, consider using the x2sys tools to set up a tracks
       index data base (see x2sys_init for more information).

              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
              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).  The ".mgd77" or ".nc" extensions
              will automatically be appended, if needed (use -I to ignore  certain  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].


       No space between the option flag and the associated arguments.

       -C     List abbreviations for all columns present in the MGD77[+] files.  Append m or e to
              limit the display to the MGD77 standard or MGD77+ extended set only.

       -E     Give a one-line summary for each cruise listed.

       -M     List the meta-data (header) and (if present) the MGD77+ history  for  each  cruise.
              Append  f  for a formatted display.  This will list individual parameters and their
              values, one entry per output line, in a format that can be searched using  standard
              UNIX  text  tools.   Alternatively,  append the name of a particular parameter (you
              only need to give enough characters - starting  at  the  beginning  -  to  uniquely
              identify  the  item).   Give - to display the list of all parameter names.  You may
              also specify the number of a parameter.  For  the  raw,  punchcard-formatted  MGD77
              original  header  block,  append  r  instead.   For the MGD77+ E77 status, append e
              instead.  Finally, for the MGD77+ history, append h instead.

       -I     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].

       -L     No  cruise  information  is  listed.  Instead, we just display a list of the GEODAS
              institution 2-character codes and  their  names.   Optionally,  append  v  to  also
              display  the  vessels  and  their  4-character  codes  for  each  institution.  The
              following is the list of institutions:
              (01) LAMONT (LDEO), (02) WOODS HOLE  O.I.,  (03)  NOAA,  (04)  US  ARMY,  (05)  NEW
              ZEALAND,  (06)  US GEOL. SURVEY, (07) OREGON ST. UNIV, (08) U.HAWAII SOEST, (09) US
              NAVY, (10) UNIV OF TEXAS, (11) RICE UNIV., (12) CANADA, (13) UNIV  OF  CONN.,  (14)
              U.MIAMI  (RSMAS),  (15) SCRIPPS INST.OC, (16) CHINA, (17) U RHODE ISLAND, (18) DUKE
              UNIVERSITY, (19) UNITED KINGDOM, (20)  U.WASHINGTON,  (22)  WESTERN  GEOPHY.,  (23)
              TEXAS  A&M  UNIV., (24) AUSTRALIA, (25) MONACO, (29) RUSSIA, (30) SPAIN, (35) NIMA,
              (58) NETHERLANDS, (60) MIN MGMT SVC, (63) ISRAEL, (67) FRANCE, (71)  SOUTH  AFRICA,
              (75)  US  COAST  GUARD, (76) BRAZIL, (77) INT. GRAV. BUR, (83) GERMANY, (84) ORSTOM
              NEW CAL, (86) CUBA, (87) ARGENTINA, (88) US NSF, (89) INDIA,  (90)  PORTUGAL,  (92)
              (J5) KOBE UNIV, (J7) UNIV OF RYUKYUS, (J8) J.O.D.C. JAPAN, (J9)  CHIBA  UNIV,  (JA)

       -V     Selects  verbose  mode,  which  will  send progress reports to stderr [Default runs


       To get one-line summary information about the cruises 01010047.mgd77  and  01010008.mgd77,

       mgd77info 01010047 01010008 -E > listing.lis

       To see the original raw MGD77 header meta-data for cruise 01010047.mgd77, run

       mgd77info 01010047 -Mr

       To determine all the parameters related to Gravity during cruise 01010047.mgd77, run

       mgd77info 01010047 -Mf | grep Gravity

       To determine the Magnetic sampling rate used during cruise 01010047.mgd77, run

       mgd77info 01010047 -Mf Magnetics_Sampling_Rate

       To see all the columns that the MGD77+ cruise contains, run

       mgd77info 01010047 -C

       To see the E77 status of all MGD77+ cruises collected by the University of Hawaii, run

       mgd77info 08 -Ia -Me


       mgd77list(1), mgd77manage(1), mgd77path(1), mgd77track(1) x2sys_init(1)


       Wessel,  P.,  and  W.  H.  F.  Smith, 2013, The Generic Mapping Tools (GMT) version 4.5.11
       Technical Reference & Cookbook, SOEST/NOAA.
       Wessel, P., and W. H. F. Smith, 1998, New,  Improved  Version  of  Generic  Mapping  Tools
       Released, EOS Trans., AGU, 79 (47), p. 579.
       Wessel,  P.,  and W. H. F. Smith, 1995, New Version of the Generic Mapping Tools Released,
       EOS Trans., AGU, 76 (33), p. 329.
       Wessel, P., and W. H. F. Smith, 1995, New Version of the Generic Mapping  Tools  Released,, Copyright 1995 by the American Geophysical Union.
       Wessel,  P.,  and  W.  H.  F.  Smith,  1991, Free Software Helps Map and Display Data, EOS
       Trans., AGU, 72 (41), p. 441.
       The     Marine     Geophysical     Data     Exchange     Format     -     "MGD77",     see