Hi! Yes, the 'drc' package can be used to obtain IC50 or any other ICx value for several, commonly used dose-response models.
The vignette is more up-to-date than the article in JSS (which dates back to the start of 2005). Christian Liaw, Andy wrote: >Perhaps also of interest is the `drc' package on CRAN. There's an article >in JSS describing it (probably the same as the package vignette--- haven't >checked). > >Andy > >From: Prof Brian Ripley > > >>On Thu, 2 Feb 2006 [EMAIL PROTECTED] wrote: >> >> >> >>>I was wondering if there is an R-package to automatically >>> >>> >>calculate the >> >> >>>IC50 value (concentration of a substrance that inhibits >>> >>> >>cell growth to >> >> >>>50%) for some measurements. >>> >>> >>Function dose.p in recommended package MASS. >> >>-- >>Brian D. Ripley, [EMAIL PROTECTED] >>Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ >>University of Oxford, Tel: +44 1865 272861 (self) >>1 South Parks Road, +44 1865 272866 (PA) >>Oxford OX1 3TG, UK Fax: +44 1865 272595 >> >>______________________________________________ >>[email protected] mailing list >>https://stat.ethz.ch/mailman/listinfo/r-help >>PLEASE do read the posting guide! >>http://www.R-project.org/posting-guide.html >> >> >> >> > >______________________________________________ >[email protected] mailing list >https://stat.ethz.ch/mailman/listinfo/r-help >PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > > > > ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
