Re: [R] ED50 from logistic model with interactions

From: Christian Ritz <ritz_at_kvl.dk>
Date: Wed, 02 May 2007 15:24:27 +0200

Hi Kate,

try looking at the package 'drc' on CRAN and in particular look at the example in the help page for the dataset 'daphnids' (?daphnids).

You can obtain arbitrary ED values with approximate standard errors using the function 'ED'.

Christian



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