\name{AutoLockMass-methods}
\docType{methods}
\alias{AutoLockMass}
\alias{AutoLockMass-methods}
\alias{AutoLockMass,xcmsRaw-method}
\title{ Automatic parameter for Lock mass fixing \code{AutoLockMass}  ~~}
\description{
 \code{AutoLockMass}  - This function decides where the lock mass scans are
	in the xcmsRaw object. This is done by using the scan time differences. 
}
\section{Methods}{
\describe{
	\item{object = "xcmsRaw"}{
		\code{signature(object = "xcmsRaw")}}
	}
}
\arguments{
  \item{object}{An \code{\link{xcmsRaw-class}} object}
}

\value{
	\code{AutoLockMass} A numeric vector of scan locations corresponding to lock Mass scans
}
\author{Paul Benton, \email{hpaul.benton08@imperial.ac.uk}}
\examples{
	\dontrun{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 equcal
		lockmass2<-AutoLockMass(xr)
		all((lockmass == lockmass) == TRUE)
		
		ob<-stitch(xr, lockMass)
	}
}

\keyword{methods}
\keyword{manip}
\keyword{lockmass}