NAME

     ndx2vel - Read Index Velocity Field  V(x,z)-Create  Velocity
     Field V(x,z)

SYNOPSIS

     ndx2vel [-Nntap] [-Ootap] [-nsns] [-nene] [-rsirs]  [-reire]
     [-dxdx] [-dzdz] [-V] [-h]

DESCRIPTION

     ndx2vel will read an index velocity  field  and  a  list  of
     velocities  with  their  corresponding  indices and create a
     velocity field where the sample values will be  the  veloci-
     ties.   The  input  to this program is a USP formatted index
     velocity field integer dataset (Format 1) where the  samples
     are  indices  to  velocities.  The output is a USP formatted
     dataset where each sample is the velocity.

FORMAT OF VELOCITY LIST

     MODEL             nv
     VELOCITIES REFLECTED
              1      vr01
              2      vr02
              3      vr03
              .       .
              .       .
              .       .
             nv      vrnv
     #...|....1....|....2....|....3....|....4....|....5....|....6....|

  Command line arguments
     -Nntap
          Enter the input velocity index field dataset name after
          typing -N.

     -Ootap
          Enter the output velocity field dataset name after typ-
          ing -O.

     -nsns
          Enter the starting trace number after typing -ns.   The
          default is to begin with the first trace of the input.

     -nene
          Enter the ending trace number after  typing  -ne.   The
          default is to use all of the input traces.

     -rsrs
          Enter the starting record number after typing -rs.  The
          default  is to begin with the first record on the input
          dataset.


     -rere
          Enter the ending record number aftr  typing  -re.   The
          default  is  to  use  all  of the records of the input.
          Generally,  velocity  field  datasets  have  only   one
          record.

     -dxdx
          Enter the trace spacing (feet or meters)  after  typing
          -dx.   This  value  will  be  placed in the output line
          header (Dx1000).  The default is to use the value  from
          the input line header (Dx1000)/1000.

     -dzdz
          Enter the sample spacing (feet or meters) after  typing
          -dz.   This  value  will  be  placed in the output line
          header (Dz1000).  The default is to use the value  from
          the input line header (Dz1000)/1000.

     -V   Enter -V for a verbose printout.

     -h   Enter this option to get online help.  The program will
          terminate after printing this.

SEE ALSO

     velin,  vlmx,  rmsvel,  rmsvlmx,  mxcvel,  vel2ndx,   vtpad,
     vtrsiz, vtvzex, vttd, xsd2vlmx

BUGS

     None known.

AUTHOR

     Mary Ann Thornton

COPYRIGHT

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