gov.nist.microanalysis.EPQLibrary
Class NoisySpectrum

java.lang.Object
  gov.nist.microanalysis.EPQLibrary.BaseSpectrum
      gov.nist.microanalysis.EPQLibrary.DerivedSpectrum
          gov.nist.microanalysis.EPQLibrary.NoisySpectrum

All Implemented Interfaces:

ISpectrumData, java.lang.Comparable

public class NoisySpectrum
extends DerivedSpectrum

Adds Poisson noise to a spectrum. It is assumed that the initial spectrum is "noise free." This function may either be used to simulate short acquisition times given a spectrum with a much longer acquisition time or it may be used to add noise to a theoretically generated spectrum.

Copyright: Pursuant to title 17 Section 105 of the United States Code this software is not subject to copyright protection and is in the public domain

Company: National Institute of Standards and Technology

Version:

1.0

Author:

Nicholas W. M. Ritchie

Field Summary

Fields inherited from class gov.nist.microanalysis.EPQLibrary.DerivedSpectrum

mSource

Fields inherited from class gov.nist.microanalysis.EPQLibrary.BaseSpectrum

mHashCode, NULL_HASH, NullSpectrum

Constructor Summary

NoisySpectrum(ISpectrumData src, double scale, int seed)
NoisySpectrum - Create a new noisy spectrum from the data in src scaled by the factor scale (nominally 0

Method Summary

double	getCounts(int i) getCounts - see ISpectrumData
java.lang.String	toString()

Methods inherited from class gov.nist.microanalysis.EPQLibrary.DerivedSpectrum

equals, getBaseSpectrum, getChannelCount, getChannelWidth, getProperties, getZeroOffset, isAlreadyDerivedFrom, isDerivedFrom

Methods inherited from class gov.nist.microanalysis.EPQLibrary.BaseSpectrum

compareTo, hashCode, initializeSpectrumIndex

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

NoisySpectrum

public NoisySpectrum(ISpectrumData src,
                     double scale,
                     int seed)

NoisySpectrum - Create a new noisy spectrum from the data in src scaled by the factor scale (nominally 0

Parameters:

src - ISpectrumData

scale - double

Method Detail

getCounts

public double getCounts(int i)

getCounts - see ISpectrumData

Parameters:

i - int

Returns:

double

toString

public java.lang.String toString()

Overrides:

toString in class BaseSpectrum