NAME

     rotate - module to perform coordinate rotation on  two  data
     sets.

SYNOPSIS

     rotate [ -N1ntap1 ] [ -N2ntap2 ] [ -O1otap1 ] [ -O2otap2 ] [
     -r  ] [ -? ] [ -h ] [ -help ]

DESCRIPTION

     rotate reads two data sets to be treated  as  an  orthogonal
     (x,y)  set,  performs a rotation of coordinates, and outputs
     the rotated data.  The amount of rotation  is  specified  by
     the  user.   A  rotation  angle  of zero is allowed, but not
     recommended (your output will be the same as the input.

     Rotate gets its data and parameters from command line  argu-
     ments.   These  arguments  specify the input and output data
     set names, the number of traces  to  be  mirrored,  and  the
     method of handling offsets.

  Command line arguments
     -N1 ntap1
          Enter the first ("X") input data set  name  immediately
          after  typing  -N1.  This input file should include the
          complete path name if the file resides in  a  different
          directory.  Example -n/b/tsp/dummy tells the program to
          look for  file  'dummy'  in  directory  '/b/tsp'.   (No
          default)

     -N2 ntap2
          Enter the second ("Y") input data set name  immediately
          after  typing  -N2.  This input file should include the
          complete path name if the file resides in  a  different
          directory.  Example -n/b/tsp/dummy tells the program to
          look for  file  'dummy'  in  directory  '/b/tsp'.   (No
          default)

     -O1 otap1
          Enter the first ("X'") output data set name immediately
          after  typing  -O1.  Specify the full path to write the
          file to a directory  other  than  the  current  working
          directory.  (No default)

     -O2 otap2
          Enter the second ("Y'") output data  set  name  immedi-
          ately after typing -O2.  Specify the full path to write
          the file to a directory other than the current  working
          directory.  (No default)

     -r rotation angle
          Enter the angle, in degrees, through  which  to  rotate
          the coordinate system.  (Default = 0.0)

AUTHOR

        Richard Crider E&PT  Houston
        IKP Changes by James M. Gridley USP Team- Tulsa

COPYRIGHT

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