The first argument to rbinom() is how many random samples you want to
draw, not whatever you seem to think it is. It's not matching the size
of what you mean to assign it to: in particular note that x[t-1, 3] is
zero for t=3 which is where you initialize it. (I.e., you are also
probably getting tripped up by an order of operations error)
Michael
On Mon, Nov 7, 2011 at 3:10 PM, Gyanendra Pokharel
<gyanendra.pokha...@gmail.com> wrote:
> Hello R community, following is my code and it shows error, can some one
> fix this error and explain why this occurs?
>
> gibbs <-function(m,n, theta = 0, lambda = 1){
> alpha <- 1.5
> beta <- 1.5
> gamma <- 1.5
> x<- array(0,c(m+1, 3))
> x[1,1] <- theta
> x[1,2] <- lambda
> x[1,3]<- n
> for(t in 2:m+1){
> x[t,1] <- rbinom(x[t-1,3], 1, x[t-1,1])
> x[t,2]<-rbeta(m, x[t-1,1] + alpha, tx[t-1,3] - x[t-1,1] + beta)
> x[t,3] <- rpois(x[t-1,3] - x[t-1,1],(1 - x[t-1,2])*gamma)
> }
> x
> }
> gibbs(100, 10)
>
> Gyn
>
> [[alternative HTML version deleted]]
>
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