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2009 Feb 18
1
using stepAIC with negative binomial regression - error message help
..., falling, low, and rising).  So predictors are binary, categorical, and continuous variables.  I ran glm.nb to fit my full model containing all first order terms.  The model I ran was: glm.nb.full<glm.nb(mantas~site+year+cosday+sinday+daylength+lunarpercent+sstmean+sststd+ sshmean+sshstd+cosdir+sindir+spd+temp+alt+tideht+high+falling+low+plankton)   However, when I use stepAIC on the model I get the message:   > stepAIC(glm.nb.full) Start:  AIC=19240.46 mantas ~ site + year + cosday + sinday + daylength + lunarpercent +     sstmean + sststd + sshmean + sshstd + cosdir + sindir + spd +     t...