getLatLongFromOSGBLetterRef method
Returna a latitude and longitude value in a given datum (default WGS84) for a given letter reference value (e.g. TG 51409 13177)
Implementation
LatLong getLatLongFromOSGBLetterRef(String letterRef, [var datum]) {
OSRef osRef = new OSRef.fromLetterRef(letterRef);
LatLong latLong = osRef.toLatLon(datum);
return latLong;
}