What is the major of Geographic Information System (GIS) and what is its job?

Geographic information system is the specialty of geographic information system.

Employment direction 1: GIS software engineer;

Employment direction 2: three-dimensional engineer;

Employment direction 3: GIS data engineer;

Geographic Information System (GIS) is a comprehensive subject, which combines geography and cartography, remote sensing and computer science. It has been widely used in different fields. It is a computer system for inputting, storing, querying, analyzing and displaying geographic data. With the development of GIS, it is also called "Geographic Information Science".

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GIS data represents the objective objects (roads, land use, altitude) in the real world in the form of digital data. The objective objects in the real world can be divided into two abstract concepts: discrete objects (such as houses) and continuous object areas (such as rainfall or altitude). There are two main methods to store data in GIS: grid and vector.

Grid data consists of rows and columns that hold unique value storage units. It is similar to a grid image. In addition to using appropriate colors, the values recorded by each unit can also be classified groups (such as land use status), continuous values (such as rainfall) or null values recorded when there is no data.

Refer to the above content: Baidu Encyclopedia-Geographic Information System (GIS)