Complex sentence: Typically, if the value of is known at locations close to (or in the neighborhood of) one can constrain the pdf of by this neighborhood: if a high spatial continuity is assumed, can only have values similar to the ones found in the neighborhood.
Split into simpler sentences: Typically, if the value of is known at locations close to (or in the neighborhood of) one can constrain the pdf of to this neighborhood. If a high spatial continuity is assumed, can only have values similar to the ones found in the neighborhood.