[Ipmpack-users] Problem with makeGrowthObj, makeSurvObj

[Chantal Hutchison]

Hello,

I have the following code

sizeNext<-c(log(ba1HC_tplus1),log(ba3HC_tplus1),log(ba6HC_tplus1)) #ADD IN
DATA FOR sizeNEXT
size<-c(log(ba1HC_t),log(ba3HC_t),log(ba6HC_t)) #ADD IN DATA FOR SIZE
covariate<-c(rep(1,length(ba1HC_t)),rep(3,length(ba3HC_t)),rep(6,length(ba6HC_t)))
#DIVERSITY IS A COVARIATE
surv<-c(1:length(sizeNext))

#SET THE SURVIVAL VALUES
for(i in 1:length(sizeNext)){
  if(is.na(sizeNext[i])==TRUE){
    surv[i]=0
  } else {
    surv[i]=1
  }
}

#MAKE A DATAFRAME
dff<-data.frame(size,sizeNext,surv,covariate)
dff<-dff[!is.na(dff$size),]
dff<-dff[!is.infinite(dff$size),]
dff<-dff[!is.infinite(dff$sizeNext),]

Then I try to use:

gr<-makeGrowthObj(dataf=dff,Formula=sizeNext~size+covariate)
sv<-makeSurvObj(dataf=dff,Formula=surv~size+covariate)

However this returns under gr coefficients, for example: (intercept), size,
covariate2, and covariate3. Why am I getting covariate2 and covariate3 when
I just want a column for covariate?

Thanks for your help!
Chantal
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