NAME

      x2sys_datalist - A generic data-extractor ascii or binary files


SYNOPSIS

      x2sys_datalist file(s) [ -Ddeffile ] [ -Fname1,name2,... ] [ -H ] [
      -M[flag] ] [ -Rwest/east/south/north ] [ -V ] [ -bo ]


DESCRIPTION

      x2sys_datalist reads one or more files and produces an ASCII [or
      binary] table.  The files can be of any format, which must be
      descriped and passed with the -D option.  You may limit the output to
      a geographic region, and insist that the output from several files be
      separated by a multiple segment header.  Only the named data fields
      will be output [Default are all columns].

      files
           Can be one or more binary or ASCII data files. To give a list of
           names, use `cat list_of_files`.


OPTIONS

      No space between the option flag and the associated arguments

      -D   Definition file for this data set. [x2sys.def]

      -F   Give a comma-separated list of column names as defined in the
           definition file. [Default is all data columns].

      -H   Input file(s) has Header record(s).  Number of header records can
           be changed by editing your .gmtdefaults file.  If used, GMT
           default is 1 header record.

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

      -bo  Selects binary output.  Append s for single precision [Default is
           double].


EXAMPLES

      To extract all data from the old-style GMT MGG file c2104.gmt, try:

      x2sys_datalist c2104.gmt -Dgmt > myfile

      To make x,y,topo input for blockmean and surface using all the files
      listed in the file tracks.lis, but only the data that are inside the
      specified area, and make output binary, try:

      x2sys_datalist `cat tracks.lis` -Fx,y,topo -R-40/-30/25/35 -bo >
      alltopo.xyz


SEE ALSO

      blockmean, gmt, surface, x2sys_cross

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