Displaying 1 result from an estimated 1 matches for "pctroad".
2011 Oct 25
1
difficulties with MuMIn model generation with coxph
...lied to an object of 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 appli...