## 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[s][n] ]

## 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  mul
           tiple  segment header.  Only the named data fields will be
           output [Default is 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 .gmt
                  defaults 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  preci
                  sion [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)

                                1 Mar 2002          X2SYS_DATALIST(l)