Because the traditional manual mapping production process is complex and backward, the mapping cycle is long, the labor intensity is high, and the produced map has little information, which is not con

Because the traditional manual mapping production process is complex and backward, the mapping cycle is long, the labor intensity is high, and the produced map has little information, which is not convenient for storage and transportation. Electronic map has the following advantages: (1) advanced technology, low cost and high benefit. Computer drawing process is simple, paperless operation, low material consumption and short product drawing cycle. Compared with traditional cartography, it can generally improve work efficiency by ten to dozens of times, so the cost of electronic maps is lower. (2) Digital storage, large information capacity and easy to carry. (3) Long storage time, not easy to be damaged and deformed. Computer maps stored in the form of CD are easy to save, usually for decades. (4) High drawing accuracy and no medium deformation. (5) Digital information is easy to modify and update. (6) Easy to use.

Electronic map is a concrete application of GIS technology and an extension of map. Electronic maps are related to traditional paper maps. For example, paper maps can be digitized to generate electronic maps; At the same time, you can also print electronic maps and generate various paper maps.