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-rw-r--r--trunk/chemCal/DESCRIPTION2
-rw-r--r--trunk/chemCal/man/calplot.lm.Rd9
2 files changed, 9 insertions, 2 deletions
diff --git a/trunk/chemCal/DESCRIPTION b/trunk/chemCal/DESCRIPTION
index de01f2a..6ea7b56 100644
--- a/trunk/chemCal/DESCRIPTION
+++ b/trunk/chemCal/DESCRIPTION
@@ -1,6 +1,6 @@
Package: chemCal
Version: 0.2-01
-Date: 2007-10-01
+Date: 2010-09-12
Title: Calibration functions for analytical chemistry
Author: Johannes Ranke <jranke@uni-bremen.de>
Maintainer: Johannes Ranke <jranke@uni-bremen.de>
diff --git a/trunk/chemCal/man/calplot.lm.Rd b/trunk/chemCal/man/calplot.lm.Rd
index 6f6d584..b60a032 100644
--- a/trunk/chemCal/man/calplot.lm.Rd
+++ b/trunk/chemCal/man/calplot.lm.Rd
@@ -30,7 +30,9 @@
The label of the y axis.
}
\item{alpha}{
- The error tolerance level for the confidence and prediction bands.
+ 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.
@@ -48,6 +50,11 @@
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)

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