Geo::Coordinates::OSGB
Geo::Coordinates::OSGB::Grid
Geo::Coordinates::OSGB::Maps
----------------------------

Routines to convert latitude and longitude coordinates to and from transverse
Mercator grid references. The routines are optimized for use with the British
national grid.

The OSGB module provides routines to convert between latitude/longitude
coordinates based on the British Ordnance Survey's standard geoid model and
the British National Grid.  The Grid module includes some useful extra routines to
parse and format grid references in a variety of popular forms (including
which Landranger map your point appears on). The Maps module provides
data for British maps.

Note that due to the nature of this type of conversion, the conversions are 
only really useful in the vicinity of the British Isles.  If you are elsewhere 
on the planet you need an implementation optimized for your neighbourhood.
Some suggestions for how to adapt the routines for use elsewhere are included
in the documentation.

INSTALLATION

This package installs in the regular Perl way.  You don't need the C compiler
and as far as I know there are no platform dependencies.  Either use your
local package tool, or just try

  [sudo] perl -MCPAN -e "install Geo::Coordinates::OSGB" 
  
For the die hards, the package can also be installed by
hand; just unzip it to some temporary home, then do the usual thing:

        Perl Makefile.PL
        make
        make test
        [sudo] make install

The full suite of tests takes less than 2 seconds on my machine. 
You may or may not need sudo depending on how you have set up your system.

DEPENDENCIES

None.

COPYRIGHT AND LICENCE

Copyright (C) 2002-2016 Toby Thurston

OSTN02 transformation data included in this module is freely
available from the Ordnance Survey but remains Crown Copyright (C)
2002

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA.

All feedback gratefully received.