https://github.com/cran/flexmix
Tip revision: 760f14a97fe114ec10577c206b8741c825951e06 authored by Bettina Gruen on 22 April 2011, 00:00:00 UTC
version 2.3-5
version 2.3-5
Tip revision: 760f14a
trypanosome.Rd
%
% Copyright (C) 2004-2011 Friedrich Leisch and Bettina Gruen
% $Id: trypanosome.Rd 4666 2011-02-23 15:52:35Z gruen $
%
\name{trypanosome}
\alias{trypanosome}
\docType{data}
\title{Trypanosome}
\description{
Trypanosome data from a dosage-response analysis to assess the
proportion of organisms belonging to different populations. It is
assumed that organisms belonging to different populations are
indistinguishable other than in terms of their reaction to the
stimulus.
}
\usage{data("trypanosome")}
\format{
A data frame with 426 observations on the following 2 variables.
\describe{
\item{\code{Dead}}{A logical vector.}
\item{\code{Dose}}{A numeric vector.}
}
}
\details{
The experimental technique involved inspection under the microscope
of a representative aliquot of a suspension, all organisms appearing
within two fields of view being classified either alive or
dead. Hence the total numbers of organisms present at each dose and
the number showing the quantal response were both random variables.
}
\source{
R. Ashford and P.J. Walker (1972): Quantal Response Analysis for a
Mixture of Populations. Biometrics 28, pages 981-988.
}
\references{
D.A. Follmann and D. Lambert (1989): Generalizing Logistic
Regression by Nonparametric Mixing. Journal of the American
Statistical Association 84(405), pages 195-300.
}
\examples{
data("trypanosome")
trypMix <- stepFlexmix(cbind(Dead, 1-Dead) ~ 1, k = 2,
nrep=5, data = trypanosome,
model = FLXMRglmfix(family = "binomial",
fixed = ~log(Dose)))
}
\keyword{datasets}