AutoLockMass-methods {xcms} | R Documentation

## Automatic parameter for Lock mass fixing `AutoLockMass` ~~

### Description

`AutoLockMass` - This function decides where the lock mass scans are in the xcmsRaw object. This is done by using the scan time differences.

### Arguments

`object` | An `xcmsRaw-class` object

### Value

`AutoLockMass` A numeric vector of scan locations corresponding to lock Mass scans

### Methods

object = "xcmsRaw"

  `signature(object = "xcmsRaw")`

### Author(s)

Paul Benton, hpaul.benton08@imperial.ac.uk

### Examples

    ## Not run: library(xcms)
        library(faahKO)
        ## These files do not have this problem
        ## to correct for but just for an example
        cdfpath <- system.file("cdf", package = "faahKO")
        cdffiles <- list.files(cdfpath, recursive = TRUE, full.names = TRUE)
        xr<-xcmsRaw(cdffiles[1])
        xr
        ##Lets assume that the lockmass starts at 1 and is every 100 scans
        lockMass<-xcms:::makeacqNum(xr, freq=100, start=1)
        ## these are equalvent
        lockmass2<-AutoLockMass(xr)
        all((lockmass == lockmass2) == TRUE)

        ob<-stitch(xr, lockMass)

    ## End(Not run)

[Package xcms version 3.9.1 Index]