math.fourierTransforms.r2
Class FFTR2Double

java.lang.Object
  math.fourierTransforms.r2.FFTR2Double

public class FFTR2Double
extends java.lang.Object

This is the FFTR2Double version 1.9

Author:

D. Lyon

Constructor Summary

FFTR2Double()

FFTR2Double(int N)

Method Summary

static void	centering(double[] r)
void	forwardFFT(double[] in_r, double[] in_i)
double[]	getImaginary()
static double	getMaxValue(double[] in)
double[]	getPowerSpectralDensity()
double[]	getReal()
static double	getTimeFFT(int n)
double[]	ifft()
static void	main(java.lang.String[] args)
void	normalizeAndTruncateInput(double[] in)
void	normalizeData()
static void	print(double[] x, double[] y)
static void	printArray(double[] v, java.lang.String title)
void	printArrays(java.lang.String title)
void	printReal(java.lang.String title)
void	reverseFFT(double[] in_r, double[] in_i)
static void	testDftVsFft()
static void	testFFT()
static void	testPSD()
static void	timeFFT()

Methods inherited from class java.lang.Object

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

Constructor Detail

FFTR2Double

public FFTR2Double(int N)

FFTR2Double

public FFTR2Double()

Method Detail

getMaxValue

public static double getMaxValue(double[] in)

normalizeAndTruncateInput

public void normalizeAndTruncateInput(double[] in)

reverseFFT

public void reverseFFT(double[] in_r,
                       double[] in_i)

centering

public static void centering(double[] r)

forwardFFT

public void forwardFFT(double[] in_r,
                       double[] in_i)

normalizeData

public void normalizeData()

getReal

public double[] getReal()

getImaginary

public double[] getImaginary()

getPowerSpectralDensity

public double[] getPowerSpectralDensity()

ifft

public double[] ifft()

printArray

public static void printArray(double[] v,
                              java.lang.String title)

printArrays

public void printArrays(java.lang.String title)

printReal

public void printReal(java.lang.String title)

testPSD

public static void testPSD()

timeFFT

public static void timeFFT()

getTimeFFT

public static double getTimeFFT(int n)

main

public static void main(java.lang.String[] args)

testFFT

public static void testFFT()

print

public static void print(double[] x,
                         double[] y)

testDftVsFft

public static void testDftVsFft()