Re: [R] Separation issue in binary response models - glm, brglm, logistf

2013-02-28 Thread Ben Bolker
Xochitl CORMON Xochitl.Cormon at ifremer.fr writes: Dear all, I am encountering some issues with my data and need some help. I am trying to run glm analysis with a presence/absence variable as response variable and several explanatory variable (time, location, presence/absence data,

Re: [R] Separation issue in binary response models - glm, brglm, logistf

2013-02-28 Thread Xochitl CORMON
Le 28/02/2013 17:22, Ben Bolker a écrit : Thank you for your help ! Xochitl CORMONXochitl.Cormonat ifremer.fr writes: Dear all, I am encountering some issues with my data and need some help. I am trying to run glm analysis with a presence/absence variable as response variable and several

Re: [R] Separation issue in binary response models - glm, brglm, logistf

2013-02-28 Thread Ben Bolker
Xochitl CORMON Xochitl.Cormon at ifremer.fr writes: Le 28/02/2013 17:22, Ben Bolker a écrit : Xochitl CORMONXochitl.Cormonat ifremer.fr writes: I am encountering some issues with my data and need some help. I am trying to run glm analysis with a presence/absence variable as response

[R] Separation issue in binary response models - glm, brglm, logistf

2013-02-27 Thread Xochitl CORMON
Dear all, I am encountering some issues with my data and need some help. I am trying to run glm analysis with a presence/absence variable as response variable and several explanatory variable (time, location, presence/absence data, abundance data). First I tried to use the glm() function,