drfit provides basic functions for accessing the
dose-response data of the UFT Bremen, Department of Bioorganic Chemistry,
fitting dose-response curves to this and similar data, calculating some
(eco)toxicological parameters and plotting the results. Functions that are
fitted are the cumulative densitiy function of the lognormal distribution,
of the logistic distribution and a linear-logistic model, derived from the
latter, which is used to describe data showing stimulation at low doses
(hormesis). The author would be delighted if anyone would join in this
effort of creating useful and useable tools for dealing with dose-response
data from biological testing.

drfit provides basic functions for fitting dose-response curves to
dose-response data, calculating some (eco)toxicological parameters and
plotting the results. Functions that are fitted are the cumulative densitiy
function of the lognormal distribution, of the logistic distribution and a
linear-logistic model, derived from the latter, which is used to describe
data showing stimulation at low doses (hormesis). In addition, functions
checking, plotting and retrieving dose-response data of the UFT Bremen,
Department of Bioorganic Chemistry, are provided.
I would be delighted if you would join in this effort of creating useful
and useable tools for dealing with dose-response data from biological
testing.

drfit provides basic functions for fitting dose-response curves to
dose-response data, calculating some (eco)toxicological parameters and
plotting the results. Functions that are fitted are the cumulative densitiy
function of the lognormal distribution (probit fit), of the logistic
distribution (logit fit), of the weibull distribution (weibull fit) and
a linear-logistic model ("linlogit" fit), derived from the latter,
which is used to describe data showing stimulation at low doses
(hormesis). In addition, functions checking, plotting and retrieving
dose-response data of the UFT Bremen, Department of Bioorganic
Chemistry, are provided.  I would be delighted if you would join in
this effort of creating useful and useable tools for dealing with
dose-response data from biological testing.