[R]- Estimate LD50 with bnlr{gnlm}

[Jens Schmidt]

Hi,

I'm not yet familar with GLM and still learning.
How can I perform a BNL (to estimate LDp values) with matrixes like this
(N indicates the observed objects):

data from:
Kerr D, Meador J. 1996. "Modeling Dose Response Using Generalized Linear
Models". Environ Toxicol Chem 15(3)

conc	respond	n
0	0	20
0	1	19
0	1	20
0	0	20
13.5	5	23
13.5	2	20
29	9	20
29	6	20
53	12	20
53	15	20
85	19	20
85	18	20
110	18	18
110	18	18

The bnlr{gnlm} documentation talks about a two column matrix as input.  

Thanks for any help
Jens

--
Jens Schmidt                    TU Dresden -Inst. f. Hydrobiologie-
Tel. +49-(0)351-463-6915        Mommsenstrasse 13
Fax  +49-(0)351-463-7108        01062 Dresden

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