stephen sefick wrote:
Naively it seems that there is no school.txt file in your specified directory.

Stephen Sefick

On Wed, Aug 19, 2009 at 12:05 PM, James
Lenihan<jamesleni...@sbcglobal.net> wrote:
I am running a BUGS function with following

schools.sim <-bugs(data,inits,
                             parameters,
                             model.file="schools.txt",
                             n.chains=3,
                             n.iter=1000,
                             bugs.directory="E:/Rprograms")

My model.file IS in the directory ="E:/Rprograms" and the code is:


According to ?bugs:


bugs.directory: directory that contains the WinBUGS executable. If the global option R2WinBUGS.bugs.directory is not NULL, it will be used as the default.

working.directory: sets working directory during execution of this function; WinBUGS' in- and output will be stored in this directory; if NULL, a temporary working directory via tempdir is used.

So either specify working.directory in a way that it points to the model.txt file or specify a full path name for your model.file

I don't believe that bugs.directory="E:/Rprograms" will do anything sensible (as it should point to your WinBUGS installation.

Uwe Ligges





model{
    for (j in 1:J){
            y[j] ~ dnorm (theta[j], tau.y[j])
            theta[j] ~ dnorm (mu.theta, tau.theta)
            tau.y[j] <- pow(sigma.y[j], -2)
    }
    mu.theta ~ dnorm (0.0, 1.0E-6)
    tau.theta <- pow(sigma.theta, -2)
    sigma.theta ~ dunif (0, 1000)

I am getting the following error which I can't understand.

Error in bugs(data, inits, parameters, model.file = "schools.txt", n.chains = 
3,  :
  schools.txt does not exist.

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