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#! /usr/bin/perl -w
# Toby Thurston --- 6 May 2009
# Parse a National Grid ref and show it as LL coordinates
use strict;
use warnings;
use Geo::Coordinates::OSGB qw/
parse_grid
grid_to_ll
shift_ll_into_WGS84
format_ll_trad
format_ll_ISO
format_grid_landranger/;
my $gr = "@ARGV";
my ($e, $n) = parse_grid($gr);
my ($lat, $lon) = grid_to_ll($e, $n);
my ($gla, $glo, undef) = shift_ll_into_WGS84($lat, $lon);
print "Your input: $gr\n";
printf "is %s\n", scalar format_grid_landranger($e, $n);
printf "and %s on that sheet\n", scalar format_ll_trad($lat, $lon);
printf "but %s in WGS84 terms\n", scalar format_ll_trad($gla, $glo);
printf "or in ISO form %s.\n", scalar format_ll_ISO($gla, $glo);
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