rjags 编译错误。无法评估计数器 i 的上限索引

Question

我看了一个类似的问题，但对我没有帮助。这是我的 JAGS 代码（包含在文本文件 simulazione_vivek.txt 中）：

model {

###############################################
######### Analisi per dati ISTAT ##########
###############################################


for (i in 1:ntot) {
  bmi[i]~dnorm(mubmi[regione[i]],sdbmi[regione[i]])
  fumo[i]~dbin(pfumo[regione[i]],1)
  grassi[i]~dbin(pgrassi[regione[i]],1)
  reddito[i]~dweib(vreddito[regione[i]],lambdareddito[regione[i]])
}


for (i in 1:popita) {
  xreddito[i]~dweib(vreddito[reg[i]],lambdareddito[reg[i]])
  xbmi[i]~dnorm(mubmi[reg[i]],sdbmi[reg[i]])
  xfumo[i]~dbin(pfumo[reg[i]],1)
  xgrassi[i]~dbin(pgrassi[reg[i]],1)
    casi[i]~dbin(pcasi[i],1)
  logit(pcasi[i])<-alpha+betar*xreddito[i]+betaf*xfumo[i]+betab*xbmi[i]+betag*xgrassi[i]

}

for (i in 1:nreg)

{
mubmi[i]~dnorm(0,0.001)
sdbmi[i]~dgamma(0.001,0.001)
vreddito[i]~dgamma(0.001,0.001)
lambdareddito[i]~dgamma(0.001,0.001)
pfumo[i]~dunif(0,1)
pfisica[i]~dunif(0,1)
pgrassi[i]~dunif(0,1)
}

alpha~dnorm(0,.001)
betar~dnorm(0,.001)
betaf~dnorm(0,.001)
betab~dnorm(0,.001)
betafi~dnorm(0,.001)
betag~dnorm(0,.001)
}

这是我的 R 代码：

library(rjags)
# simulation data from a survey with exposure but NOT response
nreg=10 #number of regions
personreg=50  #number of person per region
mureddito=rnorm(nreg,30000,2000) #simulation of values for income for each region
mubmi=rnorm(nreg,22,1) #simulation of values for bmi for each region
pfumo=runif(nreg,.3,.5)
pgrassi=runif(nreg,.1,.3)

reddito=rnorm(personreg,mureddito[1],100)
regione=rep(1,personreg)
bmi=rnorm(personreg,mubmi[1],.5)
fumo=rbinom(personreg,1,pfumo[1])
grassi=rbinom(personreg,1,pgrassi[1])

for (i in 2:nreg)
{
reddito=c(reddito,rnorm(personreg,mureddito[i],100))
regione=c(regione,rep(i,personreg))
bmi=c(bmi,rnorm(personreg,mubmi[i],.5))
fumo=c(fumo,rbinom(personreg,1,pfumo[i]))
grassi=c(grassi,rbinom(personreg,1,pfumo[i]))
}
ntot=length(reddito)
# simulation aggregated data 
# breast #number of breast cancer for each region
# pop population

breast<-floor(runif(nreg,20,40))  
pop<-floor(runif(nreg,1000,2000))

# data manipulation for the program
casi<-c(rep(1,breast[1]),rep(0,pop[1]-breast[1]))
reg<-c(rep(1,pop[1]))

for (i in 2:nreg)
{
casi<-c(casi,rep(1,breast[i]),rep(0,pop[i]-breast[i]))
reg<-c(reg,rep(i,pop[i]))  
}  

popita=length(casi)

nupdate=10
niter=10
input=list("ntot"=ntot,"regione"=regione,"nreg"=nreg,
       "reddito"=reddito,  "bmi"=bmi,"grassi"=grassi,
       "fumo"=fumo,'casi'=casi,"casireg"=reg)

init=list("mubmi"=rep(0,nreg),"sdbmi"=rep(0.01,nreg),
      "pfumo"=rep(0.5,nreg),"pgrassi"=rep(0.5,nreg),
      "pfisica"=rep(0.5,nreg),
      "vreddito"=rep(1,nreg),"lambdareddito"=rep(1,nreg))

m <- jags.model("simulazione_vivek.txt", data=input, init)
update(m, nupdate)

但我收到此错误消息：

Error in jags.model("simulazione_vivek.txt", data = input, init) : 
RUNTIME ERROR:
Compilation error on line 16.
Cannot evaluate upper index of counter i

In addition: Warning message:
In jags.model("simulazione_vivek.txt", data = input, init) :
Unused variable "casireg" in data
> update(m, nupdate)
Error in update(m, nupdate) : object 'm' not found

请帮忙。

Answer 1

您的 jags 模型中的第 16 行是：对于（我在 1:popita）{

你给jags的数据是： input=list("ntot"=ntot,"regione"=regione,"nreg"=nreg, "reddito"=reddito，"bmi"=bmi，"grassi"=grassi， "fumo"=fumo,'casi'=casi,"casireg"=reg)

看来，你没有给jags "popita"，这就是为什么它无法评估i的上索引。

rjags 编译错误。无法评估计数器 i 的上限索引

rjags Compilation error. Cannot evaluate upper index of counter i

r

data-analysis

jags