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<title>MGD77INFO</title>
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<h1 align=center>MGD77INFO</h1>
<a href="#NAME">NAME</a><br>
<a href="#SYNOPSIS">SYNOPSIS</a><br>
<a href="#DESCRIPTION">DESCRIPTION</a><br>
<a href="#OPTIONS">OPTIONS</a><br>
<a href="#EXAMPLES">EXAMPLES</a><br>
<a href="#SEE ALSO">SEE ALSO</a><br>
<a href="#REFERENCES">REFERENCES</a><br>
<hr>
<a name="NAME"></a>
<h2>NAME</h2>
<p style="margin-left:11%; margin-top: 1em">mgd77info
− Get information about MGD77[+] files</p>
<a name="SYNOPSIS"></a>
<h2>SYNOPSIS</h2>
<p style="margin-left:11%; margin-top: 1em"><b>mgd77info</b>
<i>NGDC-ids</i> [ <b>−C</b>[<b>m</b>|<b>e</b>] ] [
<b>−E</b>[<b>m</b>|<b>e</b>] ] [
<b>−I</b><i>ignore</i> ] [
<b>−Mf</b>[<i>item</i>]|<b>r</b>|<b>e</b>|<b>h</b> ] [
<b>−L</b>[<b>v</b>] [ <b>−V</b> ]</p>
<a name="DESCRIPTION"></a>
<h2>DESCRIPTION</h2>
<p style="margin-left:11%; margin-top: 1em"><b>mgd77info</b>
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. <br>
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 <b><A HREF="x2sys_init.html">x2sys_init</A></b> for more
information). <i><br>
NGDC-ids</i></p>
<p style="margin-left:22%;">Can be one or more of five
kinds of specifiers: <br>
1) 8-character NGDC IDs, e.g., 01010083, JA010010etc., etc.
<br>
2) 2-character <agency> codes which will return all
cruises from each agency. <br>
3) 4-character <agency><vessel> codes, which
will return all cruises from those vessels. <br>
4) =<list>, where <list> is a table with NGDC
IDs, one per line. <br>
5) If nothing is specified we return all cruises in the data
base. <br>
(See mgd77info <b>−L</b> for agency and vessel codes).
The ".mgd77" or ".nc" extensions will
automatically be appended, if needed (use <b>−I</b> to
ignore certain file types). Cruise files will be looked for
first in the current directory and second in all directories
listed in <b>$MGD77_HOME</b>/mgd77_paths.txt [If
<b>$MGD77_HOME</b> is not set it will default to
<b>$GMT_SHAREDIR</b>/mgd77].</p>
<a name="OPTIONS"></a>
<h2>OPTIONS</h2>
<p style="margin-left:11%; margin-top: 1em">No space
between the option flag and the associated arguments.</p>
<table width="100%" border=0 rules="none" frame="void"
cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−C</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">List abbreviations
for all columns present in the MGD77[+] files. Append
<b>m</b> or <b>e</b> to limit the display to the MGD77
standard or MGD77+ extended set only.</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−E</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Give a one-line
summary for each cruise listed.</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−M</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">List the meta-data
(header) and (if present) the MGD77+ history for each
cruise. Append <b>f</b> 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 <b>r</b> instead. For the MGD77+ E77
status, append <b>e</b> instead. Finally, for the MGD77+
history, append <b>h</b> instead.</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−I</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Ignore certain data
file formats from consideration. Append <b>a|c|t</b> to
ignore MGD77 ASCII, MGD77+ netCDF, or plain tab-separated
ASCII table files, respectively. The option may be repeated
to ignore more than one format. [Default ignores none].</p></td>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−L</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">No cruise
information is listed. Instead, we just display a list of
the GEODAS institution 2-character codes and their names.
Optionally, append <b>v</b> to also display the vessels and
their 4-character codes for each institution. The following
is the list of institutions:</p></td>
</table>
<p style="margin-left:22%;">(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) FINLAND, (93) CHILE, (J1) HYDR DEPT JAPAN,
(J2) GEOL SRVY JAPAN, (J4) UNIV TOKYO, (J5) KOBE UNIV, (J7)
UNIV OF RYUKYUS, (J8) J.O.D.C. JAPAN, (J9) CHIBA UNIV, (JA)
INST.POLAR RES., (ZZ) INST NOT CODED.</p>
<table width="100%" border=0 rules="none" frame="void"
cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">
<p style="margin-top: 1em" valign="top"><b>−V</b></p> </td>
<td width="8%"></td>
<td width="78%">
<p style="margin-top: 1em" valign="top">Selects verbose
mode, which will send progress reports to stderr [Default
runs "silently"].</p></td>
</table>
<a name="EXAMPLES"></a>
<h2>EXAMPLES</h2>
<p style="margin-left:11%; margin-top: 1em">To get one-line
summary information about the cruises 01010047.mgd77 and
01010008.mgd77, try</p>
<p style="margin-left:11%; margin-top: 1em"><b>mgd77info</b>
01010047 01010008 <b>−E</b> > listing.lis</p>
<p style="margin-left:11%; margin-top: 1em">To see the
original raw MGD77 header meta-data for cruise
01010047.mgd77, run</p>
<p style="margin-left:11%; margin-top: 1em"><b>mgd77info</b>
01010047 <b>−Mr</b></p>
<p style="margin-left:11%; margin-top: 1em">To determine
all the parameters related to Gravity during cruise
01010047.mgd77, run</p>
<p style="margin-left:11%; margin-top: 1em"><b>mgd77info</b>
01010047 <b>−Mf</b> | grep Gravity</p>
<p style="margin-left:11%; margin-top: 1em">To determine
the Magnetic sampling rate used during cruise
01010047.mgd77, run</p>
<p style="margin-left:11%; margin-top: 1em"><b>mgd77info</b>
01010047 <b>−Mf</b>Magnetics_Sampling_Rate</p>
<p style="margin-left:11%; margin-top: 1em">To see all the
columns that the MGD77+ cruise 01010047.nc contains, run</p>
<p style="margin-left:11%; margin-top: 1em"><b>mgd77info</b>
01010047 <b>−C</b></p>
<p style="margin-left:11%; margin-top: 1em">To see the E77
status of all MGD77+ cruises collected by the University of
Hawaii, run</p>
<p style="margin-left:11%; margin-top: 1em"><b>mgd77info</b>
08 <b>−Ia −Me</b></p>
<a name="SEE ALSO"></a>
<h2>SEE ALSO</h2>
<p style="margin-left:11%; margin-top: 1em"><i><A HREF="mgd77list.html">mgd77list</A></i>(1),
<i><A HREF="mgd77manage.html">mgd77manage</A></i>(1), <i><A HREF="mgd77path.html">mgd77path</A></i>(1),
<i><A HREF="mgd77track.html">mgd77track</A></i>(1) <i><A HREF="x2sys_init.html">x2sys_init</A></i>(1)</p>
<a name="REFERENCES"></a>
<h2>REFERENCES</h2>
<p style="margin-left:11%; margin-top: 1em">Wessel, P., and
W. H. F. Smith, 2009, The Generic Mapping Tools (GMT)
version 4.5.0 Technical Reference & Cookbook,
SOEST/NOAA. <br>
Wessel, P., and W. H. F. Smith, 1998, New, Improved Version
of Generic Mapping Tools Released, EOS Trans., AGU, 79 (47),
p. 579. <br>
Wessel, P., and W. H. F. Smith, 1995, New Version of the
Generic Mapping Tools Released, EOS Trans., AGU, 76 (33), p.
329. <br>
Wessel, P., and W. H. F. Smith, 1995, New Version of the
Generic Mapping Tools Released,
http://www.agu.org/eos_elec/95154e.html, Copyright 1995 by
the American Geophysical Union. <br>
Wessel, P., and W. H. F. Smith, 1991, Free Software Helps
Map and Display Data, EOS Trans., AGU, 72 (41), p. 441. <br>
The Marine Geophysical Data Exchange Format -
"MGD77", see
<i>http://www.ngdc.noaa.gov/mgg/dat/geodas/docs/mgd77.txt</i></p>
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