Re: [R-sig-eco] Re : guidance required (GLM?)

2011-08-24 Thread Gavin Simpson
On Wed, 2011-08-24 at 11:16 +0100, momadou sow wrote: > Hi, > With glm, you add the binomial family: In general, no you don't - a GLM is far more than a logistic regression. Otherwise, why would glm() allow for more families than just binomial? As biomass is positive (or at least non-negative) an

Re: [R-sig-eco] Re : guidance required (GLM?)

2011-08-24 Thread Dunbar, Michael J.
r-sig-ecology-boun...@r-project.org] On Behalf Of momadou sow Sent: 24 August 2011 11:17 To: Christopher Cesar Cc: R-sig-ecology@r-project.org Subject: [R-sig-eco] Re : guidance required (GLM?) Hi, With glm, you add the binomial family: model<-glm(biomass~Shore*Raked*Species+Shore*Fish

[R-sig-eco] Re : guidance required (GLM?)

2011-08-24 Thread momadou sow
Hi, With glm, you add the binomial family: model<-glm(biomass~Shore*Raked*Species+Shore*Fished*Species,family=binomial) model De : Christopher Cesar À : "r-sig-ecology@r-project.org" Envoyé le : Mercredi 24 Août 2011 12h02 Objet : [R-sig-eco] guidance required (GLM?) Hi all, I have carried ou