3.2. Data collection
The first column of Table 1 details the spatial data, such as road networks, which are included in the base map. The road networks are collected in the form of spatial data from a GIS vendor. The task of such company is to digitize and produce different kinds of maps. From the perspective of land use, the map layers include market locations, residential areas, commercial areas, industrial areas, school zones, and population. Population is defined as the number of people living in a specific area, otherwise known as the population density in a particular area.