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OSGB will only work for UK based locations surely. I missed where the questioner mentioned the country he wants to use, but I would have thought that
UTM
would be more likely to serve his purposes (assuming reasonably short distances are involved).
Update: I see that the original questioner has worked out the appropriate zone. For anyone else looking here let me explain what UTM is.
The US military needed a way to specify locations that would work wherever they operate (i.e. anywhere on the Earth). So what they did was split the world into 6 degree longitude slices and have a "Transverse Mercator" projection for each. So locations between -180 degrees and -174 degrees are in UTM Zone 1, -174 to -168 in Zone 2 and so on. New York, being at -74 is in Zone 18 (-78 to -72).
The other thing to notice is that there are different projections for locations North or South of the equator. So the final suggestion would be to use the zone "UTM18N"
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I took a look at UTM and Geo::Coordinates. For UTM, it is looking for zones. How would I find what zone NY, NJ,PA and CT fall under? Unfortunately, I did not get original shape file, all I have is information, with earting and northing values given.
Any help would be appreciated!
Thanks!!
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Thanks all. The country that I need miles for is U.S.
I'll check out both Geo::* and UTM.
(oops I forgot totally about CPAN... sorry.. and thanks once again everyone!!)
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I found the UTM zone information for the data file that I am using : http://jmaps.dnr.state.mn.us/mdreporter/cl_full_record.jsp?clid=305
When I use zone as 15, in Geo::Coordinates::UTM, I get following error message:
UTM zone(5) invalid.
Thanks once again for help!!!
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