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  argu-
     ments

     -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(l), gmt(l), surface(l), x2sys_cross(l)