MCMC_PRIOR_LIKELIHOOD_SAMPLING - MCMC posterior sampling [sample, likeli, acceptance_rate] = mcmc_prior_likelihood_sampling(prior_function, prior_par, likelihood_function, likelihood_par,n_samples,n_relax,keep_fields) mcmc posterior sampling using sampling from the prior and acceptance/rejection according to the likelihood prior_function: m-file that samples (once) from the prior prior_par parameters for the prior sampling likelihood_function: m-file that computed the likelihood prior_par parameters for the likelihood calculation n_samples: # of samples n_relax: # of samples before the actual sampling starts