negativeIntensitiesCorrection {clippda} | R Documentation

## A function to correct the data for the negative intensities caused by the normalization and background correction procedures of mass spectrometry data

### Description

This function corrects the mass spectra data, which has been pre-processed using tools tools from the Biomarkers Wizard `PROcess` softwares, for the negative intensities caused by their normalization and background correction procedures.

### Usage

    negativeIntensitiesCorrection(Data)

### Arguments

`Data` | is a dataframe , or a matrix, or a vector, of numerical values.

### Value

A dataframe , or a matrix, or a vector (whichever is the input quantity), of nonnegative numerical values.

### Author(s)

Stephen Nyangoma

### Examples

    data(liverdata)

    no.peaks <- 53

    JUNK_DATA <- sampleClusteredData(liverdata,no.peaks)

    Data=JUNK_DATA

    Data=JUNK_DATA
    Data=Data+1
    temp=negativeIntensitiesCorrection(Data)
    temp[,1]
    Data[,1]

[Package clippda version 1.40.0 Index]