java.lang.Object
- org.openstreetmap.josm.data.projection.proj.AbstractProj
- - org.openstreetmap.josm.data.projection.proj.LambertConformalConic

All Implemented Interfaces:

Proj
```
public class LambertConformalConic
extends AbstractProj
```
Lambert Conical Conformal Projection. Areas and shapes are deformed as one moves away from standard parallels. The angles are true in a limited area. This projection is used for the charts of North America, France and Belgium.
This implementation provides transforms for two cases of the lambert conic conformal projection:
- Lambert_Conformal_Conic_1SP (EPSG code 9801)
- Lambert_Conformal_Conic_2SP (EPSG code 9802)
For the 1SP case the latitude of origin is used as the standard parallel (SP). To use 1SP with a latitude of origin different from the SP, use the 2SP and set the SP1 to the single SP. The "standard_parallel_2" parameter is optional and will be given the same value as "standard_parallel_1" if not set (creating a 1 standard parallel projection).
References:
- John P. Snyder (Map Projections - A Working Manual,
  U.S. Geological Survey Professional Paper 1395, 1987)
- "Coordinate Conversions and Transformations including Formulas",
  EPSG Guidence Note Number 7, Version 19.
Since:

13639 (align implementation with proj.4 / GeoTools), 4285 (reworked from Lambert / LambertCC9Zones), 2304 (initial implementation by Pieren)

See Also:

Lambert conformal conic projection on MathWorld, lambert_conic_conformal_1sp, lambert_conic_conformal_2sp

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static class`	`LambertConformalConic.Parameters`	Base class of Lambert Conformal Conic parameters.
`static class`	`LambertConformalConic.Parameters1SP`	Parameters with a single standard parallel.
`static class`	`LambertConformalConic.Parameters2SP`	Parameters with two standard parallels.

Field Summary

Fields
Modifier and Type	Field	Description
`protected Ellipsoid`	`ellps`	ellipsoid
`protected static double`	`epsilon`	precision in iterative schema
`protected double`	`f`	projection factor
`protected double`	`n`	projection exponent
`private LambertConformalConic.Parameters`	`params`
`protected double`	`r0`	radius of the parallel of latitude of the false origin (2SP) or at natural origin (1SP)

Fields inherited from class org.openstreetmap.josm.data.projection.proj.AbstractProj
e, e2, en0, en1, en2, en3, en4, spherical

Constructor Summary

Constructors
Constructor Description

LambertConformalConic()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Bounds`	`getAlgorithmBounds()`	Return the bounds where this projection is applicable.
`java.lang.String`	`getName()`	Replies a human readable name of this projection.
`LambertConformalConic.Parameters`	`getParameters()`	Returns projection parameters.
`java.lang.String`	`getProj4Id()`	Replies the Proj.4 identifier.
`void`	`initialize(ProjParameters params)`	Initialize the projection using the provided parameters.
`private void`	`initialize1SP(double lat0)`	Initialize for LCC with 1 standard parallel.
`private void`	`initialize2SP(double lat0, double lat1, double lat2)`	Initialize for LCC with 2 standard parallels.
`double[]`	`invproject(double east, double north)`	Convert east/north to lat/lon.
`double[]`	`project(double phi, double lambda)`	Convert lat/lon to east/north.

Methods inherited from class org.openstreetmap.josm.data.projection.proj.AbstractProj
aasin, cphi2, invMlfn, isGeographic, mlfn, msfn, tsfn

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.openstreetmap.josm.data.projection.proj.Proj
lonIsLinearToEast

- Field Detail
  - ellps
```
protected Ellipsoid ellps
```
    ellipsoid
  - params
```
private LambertConformalConic.Parameters params
```
  - n
```
protected double n
```
    projection exponent
  - f
```
protected double f
```
    projection factor
  - r0
```
protected double r0
```
    radius of the parallel of latitude of the false origin (2SP) or at natural origin (1SP)
  - epsilon
```
protected static final double epsilon
```
    precision in iterative schema
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - LambertConformalConic
```
public LambertConformalConic()
```
- Method Detail
  - initialize
```
public void initialize(ProjParameters params)
                throws ProjectionConfigurationException
```
    Description copied from interface: Proj
    
    Initialize the projection using the provided parameters.
    
    Specified by:
    
    initialize in interface Proj
    
    Overrides:
    
    initialize in class AbstractProj
    
    Parameters:
    
    params - The projection parameters
    
    Throws:
    
    ProjectionConfigurationException - in case parameters are not suitable
  - initialize2SP
```
private void initialize2SP(double lat0,
                           double lat1,
                           double lat2)
```
    Initialize for LCC with 2 standard parallels.
    
    Parameters:
    
    lat0 - latitude of false origin (in radians)
    
    lat1 - latitude of first standard parallel (in radians)
    
    lat2 - latitude of second standard parallel (in radians)
  - initialize1SP
```
private void initialize1SP(double lat0)
```
    Initialize for LCC with 1 standard parallel.
    
    Parameters:
    
    lat0 - latitude of natural origin (in radians)
  - getName
```
public java.lang.String getName()
```
    Description copied from interface: Proj
    
    Replies a human readable name of this projection.
    
    Returns:
    
    The projection name. must not be null.
  - getProj4Id
```
public java.lang.String getProj4Id()
```
    Description copied from interface: Proj
    
    Replies the Proj.4 identifier.
    
    Returns:
    
    The Proj.4 identifier (as reported by cs2cs -lp). If no id exists, return null.
  - project
```
public double[] project(double phi,
                        double lambda)
```
    Description copied from interface: Proj
    
    Convert lat/lon to east/north.
    
    Parameters:
    
    phi - the latitude in radians
    
    lambda - the longitude in radians
    
    Returns:
    
    array of length 2, containing east and north value in meters, divided by the semi major axis of the ellipsoid.
  - invproject
```
public double[] invproject(double east,
                           double north)
```
    Description copied from interface: Proj
    
    Convert east/north to lat/lon.
    
    Parameters:
    
    east - east value in meters, divided by the semi major axis of the ellipsoid
    
    north - north value in meters, divided by the semi major axis of the ellipsoid
    
    Returns:
    
    array of length 2, containing lat and lon in radians.
  - getParameters
```
public final LambertConformalConic.Parameters getParameters()
```
    Returns projection parameters.
    
    Returns:
    
    projection parameters
  - getAlgorithmBounds
```
public Bounds getAlgorithmBounds()
```
    Description copied from interface: Proj
    
    Return the bounds where this projection is applicable. This is a fallback for when the projection bounds are not specified explicitly. In this area, the round trip lat/lon → east/north → lat/lon should return the starting value with small error. In addition, regions with extreme distortions should be excluded, if possible. It need not be the absolute maximum, but rather an area that is safe to display in JOSM and contain everything that one would expect to use.
    
    Returns:
    
    the bounds where this projection is applicable, null if unknown

Class LambertConformalConic

Nested Class Summary

Field Summary

Fields inherited from class org.openstreetmap.josm.data.projection.proj.AbstractProj

Constructor Summary

Method Summary

Methods inherited from class org.openstreetmap.josm.data.projection.proj.AbstractProj

Methods inherited from class java.lang.Object

Methods inherited from interface org.openstreetmap.josm.data.projection.proj.Proj

Field Detail

ellps

params

n

f

r0

epsilon

Constructor Detail

LambertConformalConic

Method Detail

initialize

initialize2SP

initialize1SP

getName

getProj4Id

project

invproject

getParameters

getAlgorithmBounds