[R] probit etc. for dose-response modeling

Johannes Ranke
Wed, 28 Aug 2002 06:24:27 -0000

Hi again

I found that the nonlinear least squares method also works nicely:

	library(nls)
	model <- nls(viability ~ pnorm(-log10(conc),-EC50,slope),data=data, \
		 start=list(EC50=1.8,slope=0.8))

Is there an advantage of using glm, and how would this work in this case?

Johannes