What are the GIS companies in China?

The main ones are: CPGIS (Chinese GIS Professional Association), Institute of Geography of the Chinese Academy of Sciences, Remote Sensing Agency, Wuhan Zhongdi, Beijing Supermap, Beijing Lingtu, Beijing Information Ark, etc

Software mainly includes the following categories: operating system software, database management software, system development software, GIS software, and so on. The selection of GIS software directly affects the selection of other software, the system solution, and the system construction cycle and benefits.

Geographic information system (GIS) is software that can store, display, and analyze geographic data. It mainly includes data input and, data management, data operation, data display and output, etc. As an important tool, technology and discipline for acquiring, processing, managing, and analyzing geospatial data, it has received extensive attention and rapid development.

1. Public geolocation basis;

2. Have the ability to collect, manage, analyze and output a variety of geospatial information;

3. The system is driven by analysis models, has strong spatial comprehensive analysis and dynamic capabilities, and can generate high-level geographic information

4. For the purpose of geographical research and geographic decision-making, it is a human-computer interactive spatial decision support system.

A geographic information system is a system that processes geographic information.

Geographic information refers to information that is directly or indirectly related to the spatial location on the earth, also known as spatial information. In general, GIS can be defined as: "a computer system used to collect, store, manage, process, retrieve, analyze, and express geospatial data, and is a general technology for analyzing and processing massive amounts of geographic data".

GIS is composed of computer systems, geographic data and users, through the integration, storage, retrieval, operation and analysis of geographic data, generate and output a variety of geographic information, so as to provide new knowledge for land use, resource evaluation and management, environmental monitoring, transportation, economic construction, urban planning and administrative management of the first department, and provide services for engineering design and planning and management decision-making.

In China, geographic information system is also known as resource and environmental information system. The application system of the GIS is mainly composed of five parts, including hardware, software, data, personnel and methods.

Introduction: Geographic Information System (GIS) is a data management system with a professional form of information system space. In the strict sense of the word, it is a computer system that centralizes, stores, operates, and displays georeferenced information.

For example, data can be identified based on its location in the database. Interns also often think that the entire GIS system includes the operator as well as the data fed into the system.

Geographic Information System (GIS) technology can be applied to scientific surveys, resource management, property management, development planning, mapping and route planning. For example, a geographic information system (GIS) can make it easier for emergency planners to calculate emergency response times in the event of a natural disaster, or to use the GIS system to identify wetlands that need to be protected from pollution.

1. From the perspective of system theory and application, GIS is divided into four subsystems, namely, computer hardware and system software, database system, database management system, application personnel and organization;

2. Computer hardware and system software: this is the basis for the development and application of geographic information system;

3. Database system: The function of the system is to complete the storage of data, which includes geometric data and attribute database;

4. Database management system: this is the core of GIS;

5. Application personnel and organization: Professionals, especially those compound personnel, are the key to the successful application of GIS, and a strong organization is the guarantee of system operation.