Package de.gsi.math.spectra

Class EEMD

  • public class EEMD
extends java.lang.Object
    Author:
    rstein

    • Constructor Summary

      Constructors 
      Constructor Description
      EEMD()  

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      static int computeZeroCrossings​(double[] data)  
      MatrixD eemd​(double[] data, double rms_noise, double NE)  
      static int extrema​(double[] data, double[][] spmax, double[][] spmin)
      Find all extrema in a double array.
      de.gsi.dataset.DataSet getScalogram​(double[] data, int nQuantx, int nQuanty)
      EMD spectrum implementation
      double[][] getSpectrumArray​(double[] data, int nQuantx, int Quanty)  
      int getStatus()  
      boolean isBusy()  

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • EEMD

        public EEMD()

    • Method Detail

      • eemd

        public MatrixD eemd​(double[] data,
                    double rms_noise,
                    double NE)

      • getScalogram

        public de.gsi.dataset.DataSet getScalogram​(double[] data,
                                           int nQuantx,
                                           int nQuanty)
        EMD spectrum implementation
        Parameters:
        data - input data
        nQuantx - quantisation in X
        nQuanty - quantisation in Y
        Returns:
        the complex HHT spectrum

      • getSpectrumArray

        public double[][] getSpectrumArray​(double[] data,
                                   int nQuantx,
                                   int Quanty)

      • getStatus

        public int getStatus()
        Returns:
        progress of pending calculations in percent

      • isBusy

        public boolean isBusy()
        Returns:
        whether class is busy computing a spectra

      • computeZeroCrossings

        public static int computeZeroCrossings​(double[] data)

      • extrema

        public static int extrema​(double[] data,
                          double[][] spmax,
                          double[][] spmin)
        Find all extrema in a double array.
        Parameters:
        data - double array with the input data
        spmax - array double[2][nMaxima] with index and value of all maxima (+ first and last point)
        spmin - array double[2][nMaxima] with index and value of all minima (+ first and last point)
        Returns:
        1 if inner maxima and minima where found, -1 elsewise