Package com.luciad.view.map

Class TLcdGeorefUtil

java.lang.Object

com.luciad.view.map.TLcdGeorefUtil

All Implemented Interfaces:

Serializable

public class TLcdGeorefUtil
extends Object
implements Serializable

TLcdGeorefUtil is a utility class for the Military Georeference of a latitude-longitude pair which ia also known as the World Geographic Reference System.

The GEOREF coordinate for a position consists of a group of letters and numbers with the following format:

FGfgMMxxmmxx

1. F is a letter identifying a fifteen degree longitudinal zone
2. G is a letter identifying a fifteen degree latitudinal zone
3. f is a letter identifying a one degree zone of longitude within FG
4. g is a letter identifying a one degree zone of latitude within FG
5. MM minutes of longitude, up to a certain precision (.xx)
6. mm minutes of latitude up to a certain precision (.xx)

So, depending on the georef representation having four, six, eight, ten or twelve numerals corresponds to precisions up to 1 minute, 0.1 minute, 0.01, 0.001 or 0.0001 minute respectively. Note that the decimal separator is omitted in the georef notation.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
TLcdGeorefUtil()

Method Summary

Modifier and Type	Method	Description
static ILcd2DEditablePoint	georef2LonLat(String aGeoRefString)	Converts a GEOREF coordinate into a ILcd2DEditablePoint.
static String	lonLat2Georef(double aLongitude, double aLatitude, int aNumberOfDigits)	Converts a lon-lat point into GEOREF coordinates.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

TLcdGeorefUtil

public TLcdGeorefUtil()

Method Details

georef2LonLat

public static ILcd2DEditablePoint georef2LonLat(String aGeoRefString)
                                         throws ParseException

Converts a GEOREF coordinate into a ILcd2DEditablePoint. The GEOREF coordinate for a position consists of a group of letters and numbers with the following format:

FGfgMMxxmmxx

1. F is a letter identifying a fifteen degree longitudinal zone
2. G is a letter identifying a fifteen degree latitudinal zone
3. f is a letter identifying a one degree zone of longitude within FG
4. g is a letter identifying a one degree zone of latitude within FG
5. MM minutes of longitude, up to a certain precision (.xx)
6. mm minutes of latitude up to a certain precision (.xx)

So, depending on the georef representation having four, six, eight, ten or twelve numerals corresponds to precisions up to 1 minute, 0.1 minute, 0.01, 0.001 or 0.0001 minute respectively. Note that the decimal separator is omitted in the georef notation.

Parameters:

aGeoRefString - string representation of GEOREF coordinate.

Returns:

ILcd2DEditablePoint that corresponds to aGeoRefString.

Throws:

ParseException - aGeoRefString is not a valid representation of a Georef coordinate.

lonLat2Georef

public static String lonLat2Georef(double aLongitude,
 double aLatitude,
 int aNumberOfDigits)

Converts a lon-lat point into GEOREF coordinates. The GEOREF coordinate for a position consists of a group of letters and numbers with the following format:

FGfgMMxxmmxx

1. F is a letter identifying a fifteen degree longitudinal zone
2. G is a letter identifying a fifteen degree latitudinal zone
3. f is a letter identifying a one degree zone of longitude within FG
4. g is a letter identifying a one degree zone of latitude within FG
5. MM minutes of longitude, up to a certain precision (.xx)
6. mm minutes of latitude up to a certain precision (.xx)

So, depending on the georef representation having four, six, eight, ten or twelve numerals corresponds to precisions up to 1 minute, 0.1 minute, 0.01, 0.001 or 0.0001 minute respectively. Note that the decimal separator is omitted in the georef notation.

Parameters:

aLongitude - decimal longitude of lon-lat point to be converted.

aLatitude - decimal latitude of lon-lat point to be converted.

aNumberOfDigits - defines the precision as the number of digits after the decimal point of the minutes (MM.xx and mm.xx). It must be a value between 0 and 4 inclusive corresponding to a precision of 1 minute up to 0.0001 minutes respectively.

Returns:

String representation of GEOREF coordinate of aLongitude,aLatitude.