NAME

     intdg - module for integrating trace data

SYNOPSIS

     intdg [ -Nntap ] [  -Ootap  ]  [  -rsirs  ]  [  -reire  ]  [
     -lffilter length ] [ -rossRoss Weight ] [ -V ] [ -? ]

DESCRIPTION

     intdg integrates trace data with a  running  sum  approxima-
     tion,  or the combination of a running sum approximation and
     a special residual filter which insures a  bandlimited  out-
     put.  The  running  sum  approximation alone distorts higher
     frequencies because it is not a band-limited  operation  for
     discrete  data.   In  either case, the user is encouraged to
     lowcut filter the output data since the  integration  opera-
     tion  will respond to very low frequencies in the data which
     don't usually contain  valid  information  for  conventional
     seismic  data.  Gibb's spectral ringing of the special resi-
     dual operator needs to be controlled with a  Ross  smoothing
     operator.   intdg  is  a modified version of K. L. Peacock's
     INTD subroutine which is discribed in  Geophysical  Research
     Report F76-E-16.

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

  Command line arguments
     -Nntap
          Enter the input data set name or file immediately after
          typing  -N;  entering  nothing  specifies a stdin pipe.
          This input put 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.

     -Ootap
          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).

     -rs irs
          (integer) First record to process (default = 1)

     -re ire
          (integer) Last record to process (default = all)

     -intintegration type
          Enter the type of integration desired. SUMF specifies a
          running  sum  approximation  with  the special residual
          operator. SUMM specifies a  running  sum  approximation
          only. (default=SUMF)

     -lffilter length
          Enter the residual filter operator length  in  samples.
          The maximum is 512 samples.  (default=127)

     -rossross exponent
          Enter the exponent for  Ross  smoothing.  The  exponent
          controls  the amount of smoothing which will be applied
          to the special residual operator. (default=3.0)

     -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.

COPYRIGHT

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