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-\name{predictx}
-\alias{predictx}
-\title{Predict x from y values for calibration models}
-\description{
- This function predicts x values from y values, as in classical calibration,
- including a confindence interval.
-}
-\usage{
- predictx(m,yobs,level=0.95)
-}
-\arguments{
- \item{m}{
- A calibration model of type \code{\link{calm}}.
- }
- \item{yobs}{
- A vector of observed y values for one sample.
- }
- \item{level}{
- The confidence level for the confidence interval to be reported.
- }
-}
-\value{
- A vector containing the estimate (\code{estimate}), its estimated standard
- deviation (\code{sdxpred}), its estimated confidence (\code{confxpred}).
-}
-\examples{
- data(din32645)
- m <- calm(din32645)
- r <- predictx(m,3500,level=0.95)
- cat("\nThe confidence interval is",r[["estimate"]],"+-",r[["confxpred"]],"\n")
-}
-\author{
- Johannes Ranke
- \email{jranke@uni-bremen.de}
- \url{http://www.uft.uni-bremen.de/chemie/ranke}
-}
-\keyword{regression}

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