featureList {CluMSID} | R Documentation

## Generate a `data.frame` with feature information from list of `MS2spectrum` objects

### Description

`featureList` generates a `data.frame` that contains feature ID, precurosur m/z and retention time for all features contained in a list of `MS2spectrum` objects as produced by `extractMS2spectra` and `mergeSpecList`. `featureList` is used internally by `writeFeaturelist`.

### Usage

    featureList(featlist)

### Arguments

`featlist` | A list of `MS2spectrum` objects as produced by `extractMS2spectra` and `mergeSpecList`

### Details

Although originally designed for lists of `MS2spectrum` objects, the function also works with lists of `pseudospectrum` objects. In this case, `NA` is given for precursor m/z.

### Value

A `data.frame` that contains feature ID, precurosur m/z (if available) and retention time

### Examples

    load(file = system.file("extdata",
        "featlist.RData",
        package = "CluMSIDdata"))

    pre_anno <- featureList(featlist)

[Package CluMSID version 1.0.0 Index]