NAME

     hangvz - hang a V(z) trace on a map  to  create  a  V(x,y,z)
     volume

SYNOPSIS

     hangvz -map1 upper-map -vz vz-fxn -O otap
            [ -map2 lower-map
              -z0 zorigin -x0 xorigin -y0 yorigin
              -dz deltaz -dx deltax -dy deltay
              -nz nz -vtop vtop -vbot vbot
              -sm sm -zsm zsm -rsm rsm
              -coef  -slope_x  slope_x  -slope_y  slope_y  -zbias
     zbias
              -V -? ]

DESCRIPTION

     hangvz Creates a 3D velocity volume by  hanging  a  velocity
     trace on depths described by an input map. The output volume
     is conformable with the XY dimensions of the map.

     hangvz gets both its data and its  parameters  from  command
     line arguments.

  Command line arguments
     -map1 upper-map
          Enter the name of the file for the  upper  map  surface
          immediately after typing -map1 unless the input is from
          a pipe in which case the -map1 entry must be omitted.

          hangvz assumes maps are USP format files sorted  as  xy
          planes of depth samples.

     -map2 lower-map
          The name of  the  lower  map  surface.  This  entry  is
          optional. When present, values below the lower-map sur-
          face are replaced with vbot.

     unknown

AUTHOR

     M.J. O'Brien - Allied Geophysics Inc.

COPYRIGHTS

     Copyright  2001,  Allied  Geophysics,   Inc.    All   Rights
     Reserved.

     Portions of this application are also protected as follows:

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