## 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