NAME

     appgam - apply gamma moveout based on horizons and semblance
     picks, and output re-propagated picks.

SYNOPSIS

     appgam [ -Ninput ] [ -Ooutput ] [ -nsns ] [ -nene ] [  -rsrs
     ]  [  -rere  ]  [  -nznz  ]  [  -P1inpick  ] [ -P2horgam ] [
     -P3outpick ] [ -dgammadgamma ] [ -ngammangamma ] [ -V ] [ -?
     ] [ -h ]

DESCRIPTION

     appgam reads two xsd pick files, the output from horgam  and
     outputs  residual corrected prestack data and a repropagated
     prestack xsd pick file.

     appgam gets both its dataset names and its  parameters  from
     command  line  arguments.  These  arguments  specify the two
     input pick files, the input migrated data, the  output  pick
     file,  the  output residual corrected data, the gamma incre-
     ment, and the window size in samples.

  Command line arguments
     -Nntap
          Enter the input crp sorted data set name  after  typing
          -N.   This file is usually the output of the samx flow.
          If you output common-offset data,  then  you  must  run
          angs  to  sort  the  data  into  crps.  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  'vsp'  stored  on the 'b' disk.
          This file name is optional, but if you omit  the  input
          dataset,  you  cannot specify an output dataset and you
          must then supply ne, re, and nz.

     -Ootap
          Enter the output residual corrected file  name  immedi-
          ately  after  typing -O.  The output residual corrected
          file requires the full path name (see above).  You can-
          nout input an otap if you do not enter an ntap.

     -rsrs
          Enter the starting record number after typing -rs.

     -rere
          Enter  the  ending  record  number  after  typing  -re.
          Required if no input.

     -nsns
          Enter the starting trace after typing -ns.


     -nene
          Enter the ending trace after typing -ne.   Required  if
          no input.

     -nznz
          Enter the number of input samples.  This  parameter  is
          required if no input file specified.

     -P1inpick
          Enter the input xsd pick file  name  immediately  after
          typing  -P1.   This  file should have been created with
          program xsdintrp on an xsd segment file.  Sometimes  it
          is convenient to use programs xsdd2t followed by xsdt2d
          to  convert  from  one   depth   to   another   between
          mbs/tomography iteration sequences.  The input xsd pick
          file also requires the full path name (see above).

     -P2horgam
          Enter the xsd picked semblances file name after  typing
          -O.   This  input file also requires the full path name
          (see above).

     -P3outpick
          Enter the output xsd pick file name  after  typing  -O.
          The  output  file also requires the full path name (see
          above).

     -dgammadgamma
          Enter the increment between  gammas.   The  default  is
          0.020.

     -ngammangamma
          Enter the number of gamma scans to perform  after  type
          -ngamma.   The  default  is  t  he number of traces per
          record.

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

     -?   Enter this (or '-?' if you are running in  c-shell)  to
          get  online  help.   The  program  will terminate after
          printing this.

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

SEE ALSO

     xsdd2t, xsdt2d, xsdprop, horgam, xsd2xtpick, xsdintrp.

BUGS

     Unknown

AUTHOR

     Gary Murphy

COPYRIGHT

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