search for: pctcc80

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2011 Oct 25
1
difficulties with MuMIn model generation with coxph
...f class "logical" ##RCode #read in the data >data1<-read.table('MaleData500.csv', sep=',', header=T) survival<-Surv(data1$Wks.at.dth, data1$Died) #create the full (global) model, a coxph object >globemodel<-coxph(survival~ edgeden + pctroad + pctcc90+ pctcc80 + pctcrsog + ravine + canfrag + pctoldc, data=data1) #evaluate all subsets of models using dredge >exhausting<-dredge(globemodel, eval=TRUE, fixed=c("pctroad"),m.max=3, marge.ex=TRUE, rank="AICc") Error in UseMethod("logLik") : no applicable method for ...