[R-sig-ME] glm question

Thierry Onkelinx thierry.onkelinx at inbo.be
Wed Aug 19 16:54:16 CEST 2015

Dear Joaquin,

Your attachments got stripped. It's better to put them somewhere on
line an add a link in your message.

If your problem concerns a glm() then r-help would be a better mailing
list. If it is about glmer() then this mailing list is fine.

Best regards,
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature
and Forest
team Biometrie & Kwaliteitszorg / team Biometrics & Quality Assurance
Kliniekstraat 25
1070 Anderlecht

To call in the statistician after the experiment is done may be no
more than asking him to perform a post-mortem examination: he may be
able to say what the experiment died of. ~ Sir Ronald Aylmer Fisher
The plural of anecdote is not data. ~ Roger Brinner
The combination of some data and an aching desire for an answer does
not ensure that a reasonable answer can be extracted from a given body
of data. ~ John Tukey

2015-08-19 16:39 GMT+02:00 Joaquín Aldabe <joaquin.aldabe op gmail.com>:
> Dear All, I´m running a glm with poisson errors and have a doubt when
> ploting the predicted values. One of my variables has a positive slope in
> the summary output, but when I plot the predicted values on the original
> plot it draws a line with negative slope. I appreciate your comments on
> this and any other aspect of the analysis.
> Attached is the script and data.
> Thanks in advanced,
> Joaquín.
> pd. If this is not the correct forum to ask about glm, please let me know.
> --
> *Joaquín Aldabe*
> *Grupo Biodiversidad, Ambiente y Sociedad*
> Centro Universitario de la Región Este, Universidad de la República
> Ruta 15 (y Ruta 9), Km 28.500, Departamento de Rocha
> *Departamento de Conservación*
> Aves Uruguay
> BirdLife International
> Canelones 1164, Montevideo
> https://sites.google.com/site/joaquin.aldabe
> <https://sites.google.com/site/perfilprofesionaljoaquinaldabe>
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