NAME

     arcscum  - module to generate  Adjacent  Record  Cummulative
     Statics  quality control xgraph plot.

SYNOPSIS

     arcscum [ -Nntap ] [ -Oprefix ] [ -Pptap ] [  -XYpltxy  ]  [
     -maxrstatic ] [ -tthresh ] [ -smorder ] [ -V ] [ -? ]

DESCRIPTION

     arcscum reads in  crosscorrelation  output  from   arcscross
     and  constructs an xgraph format output file containing four
     curves:

      Cummulative Shot/Group Static
      Smoothed Cummulative Shot/Group Static
      Difference of the above
      Amplitude of normalized crosscorrelation at maximum

     which may be viewed using the routine xgraph.

     arcscum gets both its data and its parameters  from  command
     line  arguments.  These arguments specify the input, output,
     an optional control pickfile, an  optional   plotxy   format
     manual  fit  file,  the  maximum  record to record static to
     search for, the minimum crosscorrelation amplitude at  which
     to  make a pick, a smoothing parameter and verbose printout,
     if desired.

  Command line arguments
     -N ntap
          Enter the input  crosscorrelation  filename immediately
          after  typing  -N  unless  the  input is from a pipe in
          which case the -N entry must be  omitted.   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'.

     -O otap
          Enter the output xgraph filename immediately after typ-
          ing -O.

     -P otap
          Enter the input XSD format input pick file  from  which
          to  obtain  the  crosscorrelation search limits immedi-
          ately after typing -P.  This file is optional.  If  not
          supplied  the  values  of  -max  and -t will be used to
          limit the crosscorrelation search.

     -XY pltxy
          Enter the input xgraph format curve file from which  to
          obtain  the  manual  fit  to the Cummulative Shot/Group
          Static curve.  This file is optional.  If supplied,  no
          correlation activity will take place.  The total static
          solution will be taken from the difference between  the
          manual  fit  and  the  cummulative static curves in the
          xgraph file.  This file  would  be  created  using  the
          plotxy  routine  as  written  by  Nancy  Mars using the
          xgraph output option under 2D options.

     -max ms
          Enter the maximum static expected  between  records  in
          milliseconds.   This  in effect defines the correlation
          search window on the crosscorrelation.

     -t thresh
          Enter the minimum crosscorrelation amplitude acceptable
          at the pick made for a given trace.  If the crosscorre-
          lation amplitude is less than this entry  the  cummula-
          tive static will be set to zero. The default value is 0
          .99.

     -sm order
          Enter the  smoothing  parameter  for  the  arcscum  FFT
          smoothing  algorithm.   The smaller the number the less
          the amount of smoothing  done  to  the  data.   Default
          value is 50.

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

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

BUGS

     Unknown

SEE ALSO

      arcsstack(1)   arcscross(1)    arcsapply(1)    arcsdatum(1)
     xgraph(1) plotxy(1)

AUTHOR

     Paul G. A. Garossino [Original Concept -> Steve L. Harris]

COPYRIGHT

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