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java.lang.Object jwo.landserf.process.proj.FrenchNTF
public class FrenchNTF
Class for representing the French national coordinate system. This is a Lambert conformal conic projection divided into one of 4 zones, plus a modified zone II projection for national maps.
Field Summary | |
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static int |
FROM_LAT_LONG
Indicates a transformation from longitude/latitude. |
static int |
TO_LAT_LONG
Indicates a transformation to longitude/latitude. |
Constructor Summary | |
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FrenchNTF()
Initialises the transformer assuming a forward transformation is from longitude/latitude to French National Grid coordinates using the national 'Lambert IIe'. |
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FrenchNTF(int direction)
Initialises the transformer in the given direction assuming the national 'Lambert IIe' projection. |
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FrenchNTF(String zone)
Initialises the transformer assuming a forward transformation is from longitude/latitude to French National Grid coordinates. |
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FrenchNTF(String zoneText,
int direction)
Initialises the transformer in the given direction. |
Method Summary | |
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boolean |
doInterpolation()
Indicates whether the transformation should use nearest neighbour (false) or some interpolator (true). |
Footprint |
frenchToLatLong(float easting,
float northing)
Converts the given French coordinates to longitude/latitude location assuming the zone defined in the constructor. |
String |
getDescription()
Provides a general description of the transformation. |
Ellipsoid |
getEllipsoid()
Reports the ellipsoid used in the transformation (Clarke 1880). |
char |
getZoneLetter()
Reports the Lambert zone letter. |
int |
getZoneNumber()
Reports the Lambert zone number used for the projection. |
Footprint |
invTransformCoords(Footprint fpIn)
Performs an inverse French grid to lat/long transform on the given location. |
Footprint |
latLongToFrench(float lng,
float lat)
Converts the given longitude/latitude coordinates into Lambert conformal conic using the appropriate zone. |
void |
setInterpolation(boolean doInterpolation)
Sets whether the transformation should use nearest neighbour (false) or some interpolator (true). |
void |
setZone(String zoneText)
Sets the zone and projection parameters for subsequent transformations. |
Footprint |
transformCoords(Footprint fpIn)
Performs a forward longitude/latitude to French grid transform on the given location. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public static final int FROM_LAT_LONG
public static final int TO_LAT_LONG
Constructor Detail |
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public FrenchNTF()
public FrenchNTF(String zone)
zone
- Lambert zone (one of "1", "2", "3", "4" or "2e")public FrenchNTF(int direction)
direction
- Indicates whether transforming to or from longitude/latitude.public FrenchNTF(String zoneText, int direction)
zoneText
- Lambert zone (one of '1', '2', '3', '4' or '2e').direction
- Indicates whether transforming to or from longitude/latitude.Method Detail |
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public Footprint latLongToFrench(float lng, float lat)
lng
- Longitude (+-180.0).lat
- Latitude (+-90.0).
public Footprint frenchToLatLong(float easting, float northing)
easting
- French easting.northing
- French northing.
public Footprint transformCoords(Footprint fpIn)
transformCoords
in interface Transformable
fpIn
- Incoming footprint to transform.
public Footprint invTransformCoords(Footprint fpIn)
invTransformCoords
in interface Transformable
fpIn
- Incoming footprint to transform.
public String getDescription()
getDescription
in interface Transformable
public boolean doInterpolation()
doInterpolation
in interface Transformable
public void setInterpolation(boolean doInterpolation)
doInterpolation
- True if transformation should perform some local interpolation.public Ellipsoid getEllipsoid()
public void setZone(String zoneText)
zoneText
- Text describing zone. Should be one of '1', '2', '3', '4' or '2e'.public int getZoneNumber()
public char getZoneLetter()
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