Practically I have to model the prior in the correct way. I want to consider what you suggested to me, for example spatial information and weighted average! How can I insert them in my model? This is the crucial point, thanks for the help 
Practically I have to model the prior in the correct way. I want to consider what you suggested to me, for example spatial information and weighted average! How can I insert them in my model? This is the crucial point, thanks for the help