title: Do i need to specify auxiliary variables for an RJMCMC with the "defaultpost" function?
body: <p>I'm trying to perform a Reversible Jump MCMC with 4 different models with different sizes. I'm using the <code>rjmcmc</code> package in R, and particularly the <code>defaultpost</code> function. I'm wondering if I need to specify auxiliary variables in the JAGS model or not.</p>
  <p>When trying to perform the RJMCMC after having performed the different MCMCs i get an error saying:</p>
  <blockquote>
  <p>Error in eigen(t(TM[[i]])) : infinite or missing values in 'x'</p>
  </blockquote>