Example usage for org.apache.commons.math3.complex Complex getImaginary

Introduction

In this page you can find the example usage for org.apache.commons.math3.complex Complex getImaginary.

Prototype

public double getImaginary()

Source Link

Document

Access the imaginary part.

Usage

From source file:uk.ac.diamond.scisoft.analysis.utils.Faddeeva.java

/**
 * Compute the Dawson function for a complex argument
 * /*from w w  w  .j  av a2 s  .c o m*/
 * @param z
 * @param relerr
 * @return Dawson(z) = sqrt(pi)/2 * exp(-z^2) * erfi(z)
 */
public static Complex Dawson(Complex z, double relerr) {
    return C(Dawson_i(C(z.getReal(), z.getImaginary()), relerr));
}

From source file:uk.ac.diamond.scisoft.analysis.utils.Faddeeva.java

/**
 * Compute the Faddeeva or scaled complementary error function
 * @param z// w  w w. j a v a2  s  .  co  m
 * @param relerr
 * @return w(z) = exp(-z^2) erfc(-iz)
 */
public static Complex w(Complex z, double relerr) {
    return C(w_i(C(z.getReal(), z.getImaginary()), relerr));
}

From source file:uk.ac.diamond.scisoft.analysis.utils.FaddeevaTest.java

private static final double cimag(Complex z) {
    return z.getImaginary();
}

From source file:uk.me.berndporr.iirj.Biquad.java

public void setTwoPole(Complex pole1, Complex zero1, Complex pole2, Complex zero2) {
    double a0 = 1;
    double a1;//  w  w  w. jav  a 2  s  . c  om
    double a2;

    if (pole1.getImaginary() != 0) {

        a1 = -2 * pole1.getReal();
        a2 = pole1.abs() * pole1.abs();
    } else {

        a1 = -(pole1.getReal() + pole2.getReal());
        a2 = pole1.getReal() * pole2.getReal();
    }

    double b0 = 1;
    double b1;
    double b2;

    if (zero1.getImaginary() != 0) {

        b1 = -2 * zero1.getReal();
        b2 = zero1.abs() * zero1.abs();
    } else {

        b1 = -(zero1.getReal() + zero2.getReal());
        b2 = zero1.getReal() * zero2.getReal();
    }

    setCoefficients(a0, a1, a2, b0, b1, b2);
}

From source file:uk.me.berndporr.iirj.MathSupplement.java

public static Complex adjust_imag(Complex c) {
    if (Math.abs(c.getImaginary()) < 1e-30)
        return new Complex(c.getReal(), 0);
    else/*from  w ww .  j ava  2  s  . c o  m*/
        return c;
}

From source file:uk.me.berndporr.iirj.MathSupplement.java

public static Complex addmul(Complex c, double v, Complex c1) {
    return new Complex(c.getReal() + v * c1.getReal(), c.getImaginary() + v * c1.getImaginary());
}

From source file:uk.me.berndporr.iirj.MathSupplement.java

public static Complex recip(Complex c) {
    double n = 1.0 / (c.abs() * c.abs());

    return new Complex(n * c.getReal(), n * c.getImaginary());
}