[R] Correction in error

[R. Michael Weylandt]

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.pokharel at 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]]
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>