introduction to e-map
E-map means electronic map or digital map.E-maps are images along with navigation facility. the information of a region or a landmark is displayed using simple graphics ,symbols and lines . users can move or browse the map to locate particular region. in case of regular maps landmark is generally a building while in E-map sit can be location, building or a dessert vendor or may be soothing else having user's interest. Google map is one of the best examples for digital mapping. web based e-map system allows users to search landmarks using any keyword of store name or a name of a supermarket or any address. e.g.a user can search the route from his home to a supermarket or a mall on a particular road. search mechanism to extract information based on criteria of user from huge information database helps user to get detailed e-map. the coordinates and position as well as atomic time obtained by a terrestrial GPS receiver from GPS satellites orbiting around the earth interact together to provide the digital mapping programming with points of origin in addition to the destination points needed to calculate distance. this information is then analyzed and compiled to create a map that provides the easiest and most efficient way to reach a destination GPS technology is the foundation behind digital mapping navigation systems.
