Package: drfit Version: 0.02-3 Date: 2004-07-23 Title: Dose-response data evaluation Author: Johannes Ranke Maintainer: Johannes Ranke Depends: R,stats,RODBC Description: 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 linea-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 the effort of creating useful and useable tools for dealing with dose-response data from biological testing. License: GPL version 2 or newer URL: http://www.r-project.org, http://www.uft.uni-bremen.de/chemie/ranke