getpspectra {CAMERA} | R Documentation

## Retrieve a spectra-group peaklist

### Description

Extract one group from a xsAnnotate object. Returns a peaklist with annotated peaks.

### Usage

      getpspectra(object,grp)

### Arguments

`object` | xsAnnotate object
`grp` | index of pseudo-spectra-group

### Details

xsAnnotate groups LC/MS Peaklist after there EIC correlation and FWHM. These function extract one of these so called "pseudo spectra groups" with include the peaklist with there annotations. The annotation depends on a before called findAdducts() ( and findIsotopes() ). Attention: The indices for the isotopes, are those from the whole peaklist. See `getPeaklist()`.

### Author(s)

Carsten Kuhl <ckuhl@ipb-halle.de>

### Examples

      library(CAMERA)
      file <- system.file('mzdata/MM14.mzdata', package = "CAMERA")
      xs   <- xcmsSet(c(file), method="centWave", ppm=30, peakwidth=c(5,10))
      an   <- xsAnnotate(xs)
      an   <- groupFWHM(an)
      peaklist <- getpspectra(an, 1)

[Package CAMERA version 1.0.0 Index]