x_setup

       x_setup  -  Determine  Pairs  of Legs that need Cross-Over
       Checking

SYNOPSIS

       x_setup [ -Llegfile ] [ -Rwest/east/south/north ]

DESCRIPTION

       x_setup scans the gmtindex.b file that  contains  informa­
       tion  on  which  legs  occupy  each  1 by 1 degree bin and
       reports all the pairs of legs that may overlap. Each  pair
       is  only  reported once, even if the two legs involved are
       found in other bins also.

       -L     Only report pairs where at least one  of  the  legs
              are present in the legfile.

       -R     The region of interrest. [Default is world]

The -L option is useful when one wants to check out a handful of

       new cruises. Obviously we
       only need to compute COEs for the pairs that  involve  one
       or  two  of  the new cruises, since all the other combina­
       tions have already been done.