NAME

     xyedit  - routine to cul data based on simple two coordinate
     header  constraints.   The  user  supplies  a two coordinate
     minimum and maximum value set.  Only data  within  the  zone
     will  be  passed.  Keywords  [  edit,  trace  header, limit,
     extract ]

SYNOPSIS

     xyedit [ -Nntap ] [ -Ootap ] [  -nsnstr  ]  [  -nenetr  ]  [
     -rsnrst  ]  [  -renred  ]  [  -hwxc_hwx  ]  [  -hwyc_hwy ] [
     -minXr_minx ] [ -maxXr_maxx ] [ -minYr_miny ] [  -maxYr_maxy
     ] [ -V ] [ -?  or  -h or  -help ]

DESCRIPTION

     xyedit : will search through an input data stream  and  pass
     only  data  whose  header  coordinates  fall inside the zone
     described by the user on the command line.  The routine does
     a  free  format read of the chosen headers so that I2, I4 or
     F4 headers can be used.  The user  defines  on  the  command
     line,  the headers to referenced, as well as the minimum and
     maximum coordinates associated with each header.  As implied
     by the name of the program [xyedit] this is a two coordinate
     extraction.

     xyedit gets both its data and its  parameters  from  command
     line  arguments.  These arguments specify the input, output,
     , the start and end  traces,  start  and  end  records,  the
     reference  trace  header  mnemonics, the minimum and maximum
     coordinate for each reference header word and verbose  prin-
     tout, if desired.

  Command line arguments
     -N ntap  [default: stdin]
          Enter the input data set name or file immediately after
          typing -N unless the input is from a pipe in which case
          the -N entry must be omitted. This  input  file  should
          include the complete path name if the file resides in a
          different directory.  Example -N/b/vsp/dummy tells  the
          program to look for file 'dummy' in directory '/b/vsp'.

     -O otap  [default: stdout]
          Enter the output data  set  name  or  file  immediately
          after  typing -O. This output file is not required when
          piping the output to another process. The  output  data
          set also requires the full path name (see above).

     -ns nstr  [default: 1]
          Enter the start trace number.

     -ne netr  [default: last trace of record]
          Enter the end trace number.

     -rs nrst  [default: 1]
          Enter start record number.

     -re nred  [default: last record]
          Enter end record number.

     -hwx c_hwx  [default: CDPBCX]
          Enter the trace header mnemonic describing the X  coor-
          dinate  in  use.  This may be a real X coordinate, such
          as CDPBCX, or simply a header  being  used  in  such  a
          fashion, for instance LinInd.

     -hwy c_hwy  [default: CDPBCY]
          Enter the trace header mnemonic describing the Y  coor-
          dinate  in  use.  This may be a real Y coordinate, such
          as CDPBCY, or simply a header  being  used  in  such  a
          fashion, for instance DphInd.

     -minX r_minX  [default: -1.0e32]
          Enter the minimum X coordinate to pass.

     -maxX r_maxX  [default: 1.0e32]
          Enter the maximum X coordinate to pass.

     -minY r_minY  [default: -1.0e32]
          Enter the minimum Y coordinate to pass.

     -maxY r_maxY  [default: 1.0e32]
          Enter the maximum Y coordinate to pass.

     -V   Enter the command line argument '-V' to get  additional
          printout.

     -? or -h
          Enter the command line argument '-?'  or  -h  or  -help
          to  get  online help.  The program terminates after the
          help screen is printed.

BUGS

     unknown

SEE ALSO

     editt(1) li_di(1) dbvec(1) edit3d(1)

AUTHOR

     [PGA Garossino: 3615]

          copyright 2001, Amoco Production Company
                   All rights reserved
             an affiliate of BP America Inc.