Relationship between Distance and Interactions
The effect of distance over spatial interactions can be represented as a classic non-linear (exponential) relationship where a location A has interactions with other locations (B, C and D), each at a different distance. The relationship assumes that each location has the same level of complementarity and that no intervening opportunities are present. The closest location, B, has the highest level of interaction with location A, while locations C and D have lower levels of interaction since they are located further away.