GGR252H1 Lecture Notes - Lecture 4: Central Place Theory, Distance Decay, Organic Growth
Document Summary
The effect of river increases the friction of distance. Choropath map- the darker the shaded, the higher the income. Thesum polygon technique- boundary surrounding locations (distance only model) Assumption in the model- they are absolutely identical. The line and point of indifference- being exactly halfway. When the market boundary moves towards you it"s called a gravity model (distance and size). This happens when a and b are not exactly identical and one is more attractive then the other. Chances of going to the near one is higher although there is still some. If there is a gradual increase or decrease, there is no line of indifference probability to go the other one. Relocation diffusion- e. g. migration. (you cant be in two places at the same time) Contagious diffusion- e. g. aids, sars, idea (you can be at different places at the same time)
