NAME

     davc2d  - 1 pass 2D agc

SYNOPSIS

     davc2d [ -Nntap ] [ -Ootap ] [ -sperc ] [ -wwind ] [ -? ]

DESCRIPTION

     davc2d does a one pass 2  dimensional  AGC  operation  using
     average  absolute amplitude computation. This may be used to
     process potential field data, time slice  data,  or  seismic
     records. It was originally written by Billy Moore to process
     potential field data.

     davc2d gets both its data and its  parameters  from  command
     line  arguments.  These arguments specify the input, output,
     the window length, and the scaling percent of 2047.

  Command line arguments
     -N ntap
          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
          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).

     -s perc
          Enter the percent of 2047 to scale  the  data  (integer
          value). Default = 15%

     -w wind
          Enter the window dimension in points (the  window  will
          be a square). The units are points since the input data
          may be X-T, Kx-Ky, etc. Default is 100.

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

BUGS

     unknown

AUTHOR

     Original USP code by Billy Moore

COPYRIGHT

     copyright 2001, Amoco Production Company
               All Rights Reserved
          an affiliate of BP America Inc.