A function to define Gaussian priors for eta. This function simply stores a vector of means and standard deviations to be passed to the main MCMC function, survspat.
etapriorGauss(mean, sd)an object of class "etapriorGauss"
the prior mean, a vector of length 1 or more. 1 implies a common mean.
the prior standard deviation, a vector of length 1 or more. 1 implies a common standard deviation.
survspat, betapriorGauss, omegapriorGauss, etapriorGauss, indepGaussianprior, derivindepGaussianprior