Example usage for org.apache.commons.math3.analysis.function Atanh Atanh

Introduction

In this page you can find the example usage for org.apache.commons.math3.analysis.function Atanh Atanh.

Prototype

Atanh

Source Link

Usage

From source file:org.cirdles.ambapo.LatLongToUTM.java

/**
 * Eccentricity helps define the shape of the ellipsoidal representation of
 * the earth//  ww w  .j a  v a2s  .  c o  m
 * 
 * Conformal latitude gives an angle-preserving (conformal) transformation 
 * to the sphere
 * 
 * It defines a transformation from the ellipsoid to a sphere 
 * of arbitrary radius such that the angle of intersection between any two 
 * lines on the ellipsoid is the same as the corresponding angle on the sphere.
 * 
 * @param eccentricity
 * @param latitudeRadians
 * @return BigDecimal conformal latitude
 * 
         
 */
private static BigDecimal calcConformalLatitude(BigDecimal eccentricity, BigDecimal latitudeRadians) {

    BigDecimal conformalLatitude;

    double latRadDouble = latitudeRadians.doubleValue();
    double eccDouble = eccentricity.doubleValue();
    double confLatDouble;

    Atanh atanh = new Atanh();
    Asinh asinh = new Asinh();

    confLatDouble = Math.atan(Math.sinh(
            asinh.value(Math.tan(latRadDouble)) - eccDouble * atanh.value(eccDouble * Math.sin(latRadDouble))));

    conformalLatitude = new BigDecimal(confLatDouble);

    return conformalLatitude;

}

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From source file:org.cirdles.ambapo.UTMToLatLong.java

/**
 * /*from  w  w  w. j a  va 2 s.c o m*/
 * @param eccentricity
 * @param tau
 * @return sigma
 */
private static BigDecimal calcSigma(BigDecimal eccentricity, BigDecimal tau) {

    double eccentricityDouble = eccentricity.doubleValue();
    double tauDouble = tau.doubleValue();

    Atanh atanh = new Atanh();
    double sigmaDouble = Math.sinh(eccentricityDouble
            * (atanh.value(eccentricityDouble * tauDouble / Math.sqrt(1 + Math.pow(tauDouble, 2)))));

    BigDecimal sigma = new BigDecimal(sigmaDouble);

    return sigma;

}

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From source file:org.cirdles.geoapp.LatLongToUTM.java

private static BigDecimal calcConformalLatitude(BigDecimal eccentricity, BigDecimal latitudeRadians) {

    BigDecimal conformalLatitude;

    double latRadDouble = latitudeRadians.doubleValue();
    double eccDouble = eccentricity.doubleValue();
    double confLatDouble;

    Atanh atanh = new Atanh();
    Asinh asinh = new Asinh();

    confLatDouble = Math.atan(Math.sinh(
            asinh.value(Math.tan(latRadDouble)) - eccDouble * atanh.value(eccDouble * Math.sin(latRadDouble))));

    conformalLatitude = new BigDecimal(confLatDouble);

    return conformalLatitude;

}

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