Almost every object in our surroundings can be represented on a map using one of three different
basic geometrical object types. These are points, line and polygon
Depending on the scale, the object types can also be dynamic. eg on the map of Africa, DSM city would be represented as a point while on a map of Eastern Tanzania, it would be presented as a polygon.
basic geometrical object types. These are points, line and polygon
POINT
- It is the simplest type,
- It has no spatial extension.
- It is used to represent objects like a well, a tree, a soil sample pit, etc.
LINE
- Represent a linear structure
- a road, a river or a powerline.
POLYGON/SURFACE
- It covers an area.
- Examples lakes, forests, etc
Depending on the scale, the object types can also be dynamic. eg on the map of Africa, DSM city would be represented as a point while on a map of Eastern Tanzania, it would be presented as a polygon.
Im a Software Engineer from Tanzania specializin in Web developer, design , programming web applications.