NAME

       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 information 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 combinations have already been done.



                                  1 Jan 2004                        x_setup(l)

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