Important types of centrality are:
The Centrality of
Flow of Goods
Pattern of Flow of goods is vital in deciding the centrality node location.
The arrangement of nodes in city is a vital determinant to decide and define central and hierarchical position of hubs of a particular service.
Transport network often decides the position of central hub of services.
Centrality is not only about distances, the location. It is about
Viability of the place
Centrality often decides Hierarchy of urban systems. They can be described as being part of the urban hierarchy. Where they stand on the hierarchy depends on many factors, the main ones being population, the number of services a settlement has and its sphere of influence.
The most obvious way of deciding where a settlement ranks on the urban hierarchy is by using the population of that settlement. The larger the population, the higher the settlement is placed on the hierarchy.
Services and Functions
Services are things such as retailers(shops), professionals (doctors, lawyers, etc), entertainment, government functions, and leisure. The theory goes that the larger a settlement is, and therefore the higher it is on the urban hierarchy, the more services and functions it will have.