R help - Aug 2009 - Bayesian data analysis - help with sampler function

I have downloaded the Umacs (Universal Markov chain sampler) and submitted the
following sample code from Kerman and Gelman.
 
s <-Sampler(
J=8,
sigma.y  =c(15,10,16,11,9,11,10,18),
          y  =c(28, 8,-3,7,-1,1,18,12),
     theta =Gibbs(theta.update,theta.init),
          V =Gibbs(V.update,mu.init),
        mu =Gibbs(mu.update,mu.init),
        tau =Gibbs(tau.update,tau.init),
       Trace("theta[1]")
)
 
Error: could not find function "Sampler"
 
Is there anything else I need to download.
 
Thanks,
 
 
Jim L.
  
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On 17/08/2009 1:06 PM, James Lenihan wrote:
> I have downloaded the Umacs (Universal Markov chain sampler) and submitted
the following sample code from Kerman and Gelman.
>  
> s <-Sampler(
> J=8,
> sigma.y  =c(15,10,16,11,9,11,10,18),
>           y  =c(28, 8,-3,7,-1,1,18,12),
>      theta =Gibbs(theta.update,theta.init),
>           V =Gibbs(V.update,mu.init),
>         mu =Gibbs(mu.update,mu.init),
>         tau =Gibbs(tau.update,tau.init),
>        Trace("theta[1]")
> )
>  
> Error: could not find function "Sampler"
>  
> Is there anything else I need to download.
Looks like you didn't attach the package using library(Umacs). 
Installing just gets it onto your system, you need to attach it so the 
objects in it are visible.

Duncan Murdoch