Which are the components of the GIS?
From the application point of view, geographic information system consists of hardware, software, data, personnel and methods, composed of five parts. Hardware and software for geographic information system to provide the environment; data is an important content of GIS; approach is building GIS solutions; personnel is the key to system construction and dynamic factors,A direct impact on and the coordination of several other components.
Hardware, including computer and network equipment, storage equipment, data input, display and output peripherals and so on.
Software includes the following categories:
- - Operating system software
- - Database Management Software
- - System development software
- - GIS software, and so on.
GIS software selection, the choice of a direct impact on other software affecting the system solution, also affect the system construction cycle and efficiency.
GIS data is an important aspect, but also the soul of GIS systems and life. Data organization and processing of GIS application system is a key link in the construction, involving a number of problems:
- - Should choose what (or what) scale of the data?
- - Available data are now of how powerful?
- - Data accuracy can meet requirements?
- - Whether the data format can be an existing GIS software integration?
- - What method should be used for processing and integration?
- - The methodology used for data updates and maintenance? And so on.
Method refers to technology road system needs to be adopted, what kind of solutions to achieve system goals. Methods used will directly affect the system performance, affecting system availability and maintainability.
People are the most important part of the operation of GIS systems. personnel skill level and capacity of organization and management system construction is to determine the success or failure of an important factor. System personnel, according to different division of labor has, the project manager, project development personnel, project data, personnel, system documentation writing, system testing personnel and so forth. The various parts work together, Division of labor is a GIS system, an important guarantee for the success of the building.
GIS application system building needs to do to proceed from the above five areas.
