If just one array of (x1,y1,x2,y2...) the easiest way would be to use List::Util 
use List::Util qw(pairmap);

my @coords = (86.925, 27.988, 86.5278, 27.744, 86.43, 27.365);

my @pairs = pairmap { [ $a, $b ] } @coords;

$shp_writer->add_shape( \@pairs, @attributes );

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In reply to Re^3: Geo::Shapefile::Writer help by tangent
in thread Geo::Shapefile::Writer help by kjslover

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