NAME

     multlay  - generates primary and nth order multiple overlays
     in xsd pick file format

SYNOPSIS

     multlay [ -N1truedip ] [ -N2tweak ] [ -flgoflag ] [  -dttime
     ]  [  -tr1n ] [ -mtmtime ] [ -multorder ] [ -modemode ] [  -
     model ] [ -? or -h  ]

DESCRIPTION

     multlay generates primary and nth order multiple overlays in
     xsd pick file format.  These picks may then be read into xsd
     and the events overlain on your seismic  data.   Alternately
     the  picks may be input to program  ich  and used in conjun-
     tion with  radonf, radonr, polymute, fft2da  etc.  to  model
     expected events in the data.

     multlay gets both its data and its parameters  from  command
     line  arguments.  These  arguments  specify  the truedip and
     tweak input files, the output type flag, the sample interval
     and  maximum  time  of  the associated dataset, the order of
     multiple to generate, the mode of generation and  the  model
     flag.

  Command line arguments
     -N1 ntap
          Enter the tvd truedip  input  data  set  name  or  file
          immediately  after  typing  -N1. 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'.

     -N2 ntap
          Enter the tvd tweak input data set name or file immedi-
          ately after typing -N2. If the nmo option is chosen you
          may enter the truedip filename here as well.

     -flg oflag
          Enter the output type flag:   0 --->  nmo overlay
                                        1 --->  smo overlay
                                        2 --->  both

     -dt time
          Enter the sample interval of the associated dataset  in
          milliseconds.

     -tr1 n
          Enter the near trace flag:   n ---> sequential trace  1
          is near offset.
                                       f ---> sequential trace  1
          is far offset.

     -mt mtime
          Enter the maximum time in seconds  listed  in  the  tvd
          truedip file.

     -mult order
          Enter the order of multiple to be generated.

     -mode mode
          Enter the output mode flag:   0 ---> output multiple of
          order requested.
                                        1 ---> output up  to  and
          including multiple order requested.

     -model
          Enter  -model  on the command  line  if  you  wish  the
          record  numbers  in the pick files to reflect the index
          location on the associated dataset.  The default is  to
          output record number 1 in all cases for ease of segment
          display in the CEP Demult movie process.  This  parame-
          ter  should  be  flagged if the output will be run into
          ich .

     -? 0r -h
          Enter the command line argument  '-?'   or  -h  to  get
          online  help.   The  program  terminates after the help
          screen is printed.

BUGS

     The full xsd header line is not generated as  there  is  not
     enough  information in the input to create a reliable struc-
     ture.

SEE ALSO

     stacklay(1) sunlay(1) picklay(1)

AUTHOR

     Doug Haun [GUPCO:1990]

COPYRIGHT

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