What are the similarities and differences between Geographic Information Systems (GIS) and maps (for details).

Heh, I'm studying GIS ~ I don't need to tell you what a map is, I'll just talk about GIS! A Geographic Information System (GIS) is a technical system that has an important function of displaying maps on a computer! There are a number of applications on the map, such as the production of a system, there is a topographic map of a city, it has a street name of the main building names and so on, these can be displayed, and in the making of this system, but also an attribute table, the attribute table on the record of each polygon on the map of each of the attribute values, such as this small piece of a village, then the attribute library corresponds to this small piece of it has its attributes For example, if it is a village, then the corresponding block in the attribute library will have its attributes: town, county, city, village population, village area, and so on. In GIS, it is time-consuming to create such a comprehensive map, but it is also very useful! Let me give you an example of a common problem! For example, you want to buy a house, in the map is more ruthless difficult, but you use GIS, it is very simple, as long as you enter the conditions of the value (such as from the school less than 1,000 meters, at least 100 meters from the city's traffic arteries, from the food market 500 meters, etc.), the system can immediately generate the area that meets your conditions, which will only take you 10 minutes! So, to say the difference between GIS and maps, is that GIS focuses on the use of maps is more convenient, recorded data is richer, visualization and understanding of a higher degree, more powerful.