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PHPcoord - readme.txt
- (c) 2005 Jonathan Stott
Created on 11-Aug-2005
- 2.3 - 24 Aug 2006 - - Changed OSRef->toSixFigureString() so that the eastings and northings - are rounded rather than floored. - 2.2 - 11 Feb 2006 - - Used different algorithm for calculating distance between latitudes - and longitudes - fixes a number of problems with distance calculations - 2.1 - 22 Dec 2005 - - Added getOSRefFromSixFigureReference function - 2.0 - 21 Dec 2005 - - Completely different object design - conversion functions now through - objects rather than static functions - - Updated comments and documentation - 1.1 - 11 Sep 2005 - - Added WGS84/OSGB36 conversions
1.0 - 11 Aug 2005
- Initial version
-------------------------------------------------------------------------- - -PHPcoord is a PHP script that provides functions for handling various -co-ordinate systems and converting between them. Currently, OSGB (Ordnance -Survey of Great Britain) grid references, UTM (Universal Transverse -Mercator) references and latitude/longitude are supported. A function is -also provided to find the surface distance between two points of latitude -and longitude. - -When using the OSGB conversions, the majority of applications use the -WGS84 datum rather than the OSGB36 datum. Conversions between the two -data were added in v1.1 - the conversions should be accurate to within -5m or so. If accuracy is not important (i.e. to within 200m or so), -then it isn't necessary to perform the conversions. - -Examples of how to use the functions provided in phpcoord.php can be -found in the test.php script. - -See http://www.jstott.me.uk/phpcoord/ for latest releases and information. - - -DISCLAIMER - -Accuracy of the co-ordinate conversions contained within the PHPcoord -package is not guaranteed. Use of the conversions is entirely at your -own risk and I cannot be held responsible for any consequences of -errors created by the conversions. I do not recommend using the package -for mission-critical applications. - - -LICENSING - -This software product is available under the GNU General Public License -(GPL). Terms of the GPL can be read at http://www.jstott.me.uk/gpl/. -Any commercial use requires the purchase of a license - contact me at -phpcoord@jstott.me.uk for details.
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