Anders Birkenes datagutten
datagutten
/ gist:8083549
Created
December 22, 2013 14:44
A tool to convert map coordinates from UTM to Geographic
Original javascript version found on http://www.uwgb.edu/dutchs/usefuldata/ConvertUTMNoOZ.HTM and converted to PHP.
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| <?Php | |
| //Original version: http://www.uwgb.edu/dutchs/usefuldata/ConvertUTMNoOZ.HTM | |
| function UTMtoGeog($Easting,$Northing,$UtmZone,$SouthofEquator=false) //Convert UTM Coordinates to Geographic | |
| { | |
| //Declarations | |
| //Symbols as used in USGS PP 1395: Map Projections - A Working Manual | |
| $k0 = 0.9996;//scale on central meridian | |
| $a = 6378137.0;//equatorial radius, meters. | |
| $f = 1/298.2572236;//polar flattening. | |
| $b = $a*(1-$f);//polar axis. |