diff options
author | ranke <ranke@5fad18fb-23f0-0310-ab10-e59a3bee62b4> | 2015-08-22 09:03:10 +0000 |
---|---|---|
committer | ranke <ranke@5fad18fb-23f0-0310-ab10-e59a3bee62b4> | 2015-08-22 09:03:10 +0000 |
commit | d8d6012e98fb4c7f158bcc7c173407c2b5f3e42e (patch) | |
tree | 92bcbbc548431b214fb387e20dc423745b2ab897 /man/calplot.lm.Rd | |
parent | 2be973ef45816e04a6a59f59a4fae50f8f17a5e1 (diff) |
Get rid of the branched svn layout I never used
git-svn-id: http://kriemhild.uft.uni-bremen.de/svn/chemCal@36 5fad18fb-23f0-0310-ab10-e59a3bee62b4
Diffstat (limited to 'man/calplot.lm.Rd')
-rw-r--r-- | man/calplot.lm.Rd | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/man/calplot.lm.Rd b/man/calplot.lm.Rd new file mode 100644 index 0000000..b60a032 --- /dev/null +++ b/man/calplot.lm.Rd @@ -0,0 +1,69 @@ +\name{calplot} +\alias{calplot} +\alias{calplot.default} +\alias{calplot.lm} +\title{Plot calibration graphs from univariate linear models} +\description{ + Produce graphics of calibration data, the fitted model as well + as confidence, and, for unweighted regression, prediction bands. +} +\usage{ + calplot(object, xlim = c("auto", "auto"), ylim = c("auto", "auto"), + xlab = "Concentration", ylab = "Response", alpha=0.05, varfunc = NULL) +} +\arguments{ + \item{object}{ + A univariate model object of class \code{\link{lm}} or + \code{\link[MASS:rlm]{rlm}} + with model formula \code{y ~ x} or \code{y ~ x - 1}. + } + \item{xlim}{ + The limits of the plot on the x axis. + } + \item{ylim}{ + The limits of the plot on the y axis. + } + \item{xlab}{ + The label of the x axis. + } + \item{ylab}{ + The label of the y axis. + } + \item{alpha}{ + The error tolerance level for the confidence and prediction bands. Note that this + includes both tails of the Gaussian distribution, unlike the alpha and beta parameters + used in \code{\link{lod}} (see note below). + } + \item{varfunc}{ + The variance function for generating the weights in the model. + Currently, this argument is ignored (see note below). + } +} +\value{ + A plot of the calibration data, of your fitted model as well as lines showing + the confidence limits. Prediction limits are only shown for models from + unweighted regression. +} +\note{ + Prediction bands for models from weighted linear regression require weights + for the data, for which responses should be predicted. Prediction intervals + using weights e.g. from a variance function are currently not supported by + the internally used function \code{\link{predict.lm}}, therefore, + \code{calplot} does not draw prediction bands for such models. + + It is possible to compare the \code{\link{calplot}} prediction bands with the + \code{\link{lod}} values if the \code{lod()} alpha and beta parameters are + half the value of the \code{calplot()} alpha parameter. + +} +\examples{ +data(massart97ex3) +m <- lm(y ~ x, data = massart97ex3) +calplot(m) +} +\author{ + Johannes Ranke + \email{jranke@uni-bremen.de} + \url{http://www.uft.uni-bremen.de/chemie/ranke} +} +\keyword{regression} |