jhpro.tseries

Class PeakFinder

java.lang.Object

jhpro.tseries.PeakFinder

public class PeakFinder
extends java.lang.Object

Peak finder algorithm. Given a spectrum and search parameters, performs a digital filter peak search as specified in V. Hnatowicz et al in Comp Phys Comm 60 (1990) 111-125. Setting the sensitivity to a typical value of 3 gives a 3% chance for any peak found to be false.Maximum separation in sigma between peaks is 1.3.

Field Summary

Fields

Modifier and Type	Field and Description
Multiplet[]	multiplets
java.lang.String	name

Constructor Summary

Constructors

Constructor and Description
PeakFinder(java.lang.String name, double[] spectrum, double sensitivity, double width) Creates new PeakFinder.

Method Summary

Modifier and Type	Method and Description
double[]	getCentroids() Return centroids of the found peaks.
Multiplet[]	getPeaks() Return peaks in form of multiplets.
void	setMaxSeparation(double sep) Set maximum separation between the peaks in sigma (1.3 is the default).

Methods inherited from class java.lang.Object

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

Field Detail

multiplets

public Multiplet[] multiplets

name

public java.lang.String name

Constructor Detail

PeakFinder

public PeakFinder(java.lang.String name,
                  double[] spectrum,
                  double sensitivity,
                  double width)

Creates new PeakFinder. Given a spectrum and search parameters, performs a digital filter peak search as specified in V. Hnatowicz et al in Comp Phys Comm 60 (1990) 111-125. Setting the sensitivity to a typical value of 3 gives a 3% chance for any peak found to be false.

Parameters:

spectrum - spectrum to be searched

sensitivity - larger numbers (typical=3) require better defined peaks

width - typical FWHM of peaks in spectrum

Method Detail

setMaxSeparation

public void setMaxSeparation(double sep)

Set maximum separation between the peaks in sigma (1.3 is the default).

Parameters:

sep -

getCentroids

public double[] getCentroids()

Return centroids of the found peaks.

Returns:

positions.

getPeaks

public Multiplet[] getPeaks()

Return peaks in form of multiplets.

Returns: