hierarchical bayesian analysis

actually i am new to statistics and i have to work with bayesian analysis.i need to use bayesian model to perform classification of hyperspectral images.i went through quite a few papers and have understood to some extent.but i wanted to know that do the gibbs sampling method and posterior distribution give the same result?suggestions, if any shall be of great help...
thank you,
ekta shah


Ambassador to the humans
I don't understand your question. Gibbs sampling is just one way to obtain samples from a posterior distribution. There are other methods of obtaining samples from the posterior too...