A geographic information system (GIS) is a computer system for capturing, storing, checking, and displaying data related to positions on Earth.
A geographic information system (GIS) is a computer system for capturing, storing, checking, and displaying data related to positions on Earth’s surface.
Raster data model, a geographic feature like land cover is represented as
- Single Square Cell
Vector data model, features on earth represented as
- Points
- Lines
- Polygons
- Attributes values in GIS are stored as relational database tables
- Each feature (point, line, polygon, or raster) within each GIS layer will be represented as a record in a table.