[R] From THE R BOOK -> Warning: In eval(expr, envir, enclos) : non-integer #successes in a binomial glm!

Corrado ct529 at york.ac.uk
Tue Mar 30 17:19:46 CEST 2010

Dear David,

David Winsemius wrote:
> A) It is not an error, only a warning. Wouldn't it seem reasonable to 
> issue such a warning if you have data that violates the distributional 
> assumptions?
I am not questioning the approach. I am only trying to understand why a 
(rather expensive) source of documentation and the behaviour of a 
function are not aligned.

> B) You did not include any of the data
Data attached as R object.
> C) Wouldn't this be more appropriate to the author of the book if this 
> is "exactly what was suggested" there?
I think it will be definitively appropriate, but only when I am certain 
I am not doing anything wrong.


Corrado Topi
PhD Researcher
Global Climate Change and Biodiversity
Area 18,Department of Biology
University of York, York, YO10 5YW, UK
Phone: + 44 (0) 1904 328645, E-mail: ct529 at york.ac.uk

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