Package eu.isas.peptideshaker.recalibration

Class RunMzDeviation

java.lang.Object
eu.isas.peptideshaker.recalibration.RunMzDeviation
public class RunMzDeviation extends Object
This class computes the mz deviations for a a given run (i.e. file).
Author:
Marc Vaudel

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final int
    mzBinSize
    The bin size in m/z in number of MS/MS spectra.
    static final int
    rtBinSize
    The bin size in retention time in number of MS/MS spectra.

  • Constructor Summary

    Constructors
    Constructor
    Description
    RunMzDeviation(String spectrumFileNameWithoutExtension, com.compomics.util.experiment.identification.Identification identification, com.compomics.util.experiment.io.biology.protein.SequenceProvider sequenceProvider, com.compomics.util.experiment.mass_spectrometry.SpectrumProvider spectrumProvider, com.compomics.util.parameters.identification.IdentificationParameters identificationParameters, com.compomics.util.waiting.WaitingHandler waitingHandler)
    Creates a map of m/z deviations for a given run.

  • Method Summary

    Modifier and Type
    Method
    Description
    double
    getFragmentMzError(double precursorRT, double fragmentMZ)
    Returns the fragment error at the given retention time and fragment m/z.
    ArrayList<Double>
    getFragmentMZList(double precursorRT)
    Returns the list for fragment ion m/z bins at a given retention time point.
    double
    getOffset(double rtBin)
    Returns the precursor m/z deviation offset at a given retention time point.
    double
    getPrecursorMzCorrection(double precursorMz, double precursorRT)
    Returns an interpolation of the median error in the bins surrounding the given precursor m/z when recalibrating with m/z only.
    ArrayList<Double>
    getPrecursorRTList()
    Returns the list of precursor retention time bins.
    double
    getSlope(double rtBin)
    Returns the precursor m/z deviation slope at a given retention time point.
    double[]
    recalibrateFragmentMz(double precursorRT, double[] originalMz)
    Recalibrate an m/z array.

    Methods inherited from class java.lang.Object

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

  • Field Details

    • rtBinSize

      public static final int rtBinSize
      The bin size in retention time in number of MS/MS spectra.
      See Also:

    • mzBinSize

      public static final int mzBinSize
      The bin size in m/z in number of MS/MS spectra.
      See Also:

  • Constructor Details

    • RunMzDeviation

      public RunMzDeviation(String spectrumFileNameWithoutExtension, com.compomics.util.experiment.identification.Identification identification, com.compomics.util.experiment.io.biology.protein.SequenceProvider sequenceProvider, com.compomics.util.experiment.mass_spectrometry.SpectrumProvider spectrumProvider, com.compomics.util.parameters.identification.IdentificationParameters identificationParameters, com.compomics.util.waiting.WaitingHandler waitingHandler)
      Creates a map of m/z deviations for a given run.
      Parameters:
      spectrumFileNameWithoutExtension - the name of the file of the run
      identification - the corresponding identification
      sequenceProvider - the protein sequence provider
      spectrumProvider - the spectrum provider
      identificationParameters - the identification parameters
      waitingHandler - a waiting handler displaying the progress and allowing the user to cancel the process. Can be null

  • Method Details

    • getPrecursorRTList

      public ArrayList<Double> getPrecursorRTList()
      Returns the list of precursor retention time bins.
      Returns:
      the list of precursor retention time bins

    • getFragmentMZList

      public ArrayList<Double> getFragmentMZList(double precursorRT)
      Returns the list for fragment ion m/z bins at a given retention time point.
      Parameters:
      precursorRT - the precursor retention time
      Returns:
      the list for fragment ion m/z bins

    • getSlope

      public double getSlope(double rtBin)
      Returns the precursor m/z deviation slope at a given retention time point.
      Parameters:
      rtBin - the retention time bin
      Returns:
      the precursor m/z deviation slope

    • getOffset

      public double getOffset(double rtBin)
      Returns the precursor m/z deviation offset at a given retention time point.
      Parameters:
      rtBin - the retention time bin
      Returns:
      the precursor m/z deviation offset

    • getPrecursorMzCorrection

      public double getPrecursorMzCorrection(double precursorMz, double precursorRT)
      Returns an interpolation of the median error in the bins surrounding the given precursor m/z when recalibrating with m/z only.
      Parameters:
      precursorMz - the precursor m/z
      precursorRT - the precursor retention time
      Returns:
      the median error

    • getFragmentMzError

      public double getFragmentMzError(double precursorRT, double fragmentMZ)
      Returns the fragment error at the given retention time and fragment m/z.
      Parameters:
      precursorRT - the precursor retention time
      fragmentMZ - the fragment m/z
      Returns:
      the error found

    • recalibrateFragmentMz

      public double[] recalibrateFragmentMz(double precursorRT, double[] originalMz)
      Recalibrate an m/z array.
      Parameters:
      precursorRT - the precursor retention time
      originalMz - the original m/z
      Returns:
      the recalibrated m/z