createMSnset {DAPAR} | R Documentation

## Creates an object of class `MSnSet` from text file

### Description

Builds an object of class `MSnSet` from a single tabulated-like file for quantitative and meta-data and a dataframe for the samples description. It differs from the original `MSnSet` builder which requires three separated files tabulated-like quantitative proteomic data into a `MSnSet` object, including metadata.

### Usage

    createMSnset(file, metadata = NULL, indExpData, indFData, indiceID = NULL,
      indexForOriginOfValue = NULL, logData = FALSE, replaceZeros = FALSE,
      pep_prot_data = NULL, versions = NULL)

### Arguments

`file` | The name of a tab-separated file that contains the data.
`metadata` | A dataframe describing the samples (in lines).
`indExpData` | A vector of string where each element is the name of a column in designTable that have to be integrated in the `fData()` table of the `MSnSet` object.
`indFData` | The name of column in `file` that will be the name of rows for the `exprs()` and `fData()` tables
`indiceID` | The indice of the column containing the ID of entities (peptides or proteins)
`indexForOriginOfValue` | xxxxxxxxxxx
`logData` | A boolean value to indicate if the data have to be log-transformed (Default is FALSE)
`replaceZeros` | A boolean value to indicate if the 0 and NaN values of intensity have to be replaced by NA (Default is FALSE)
`pep_prot_data` | A string that indicates whether the dataset is about
`versions` | A list of the following items: Prostar_Version, DAPAR_Version peptides or proteins.

### Value

An instance of class `MSnSet`.

### Author(s)

Florence Combes, Samuel Wieczorek

### Examples

    require(DAPARdata)
    require(Matrix)
    exprsFile <- system.file("extdata", "Exp1_R25_pept.txt", package="DAPARdata")
    metadataFile <- system.file("extdata", "samples_Exp1_R25.txt", package="DAPARdata")
    metadata = read.table(metadataFile, header=TRUE, sep="\t", as.is=TRUE)
    indExpData <- c(56:61)
    indFData <- c(1:55,62:71)
    indiceID <- 64
    createMSnset(exprsFile, metadata,indExpData,  indFData, indiceID, indexForOriginOfValue = NULL, pep_prot_data = "peptide")

[Package DAPAR version 1.12.11 Index]