Visualization of spatio-temporal data of bus trips

Bus is public means to travel in several cities. Traditional maps provide with the information of bus routes that passengers may use to design a travel from a place to another. It is difficult for them to obtain an appropriate route because of the lack of the information of time on the traditional maps. Some web sites enable passengers to take bus but they do not support passengers to have more diverse selections. In this paper, buses are considered as moving objects. Mathematically, movements of objects are the mappings (functions) from times to locations. In 3-D Cartesian coordinate systems, space-time cubes, which are called temporal maps in this paper, are models representing movements in spatio-temporal domain. A bus route on a traditional map is the curve connecting the spatial positions where the bus visits, from the departure station to the arrival. A bus trip is a bus route included time. It is represented on temporal maps. With the visualization of spatio-temporal data of bus trips on temporal maps, passengers may mark out bus trips for their more appropriate travels. This article implemented visualization tools for the design of bus travels on temporal maps.